Adding size of files using shell script











up vote
2
down vote

favorite












I want to add and echo the sum of several files using shell script. How do I start?
I have a list of them like that:



$ stat /etc/*.conf | grep Size | cut -f4 -d' '
123
456
789
101112









share|improve this question




















  • 5




    you don't we simply use du?
    – msp9011
    Nov 21 at 7:30






  • 1




    @msp9011, du will calculate also subdirectories
    – Romeo Ninov
    Nov 21 at 7:39






  • 1




    @RomeoNinov here we are checking only files...du -b /etc/*.conf
    – msp9011
    Nov 21 at 8:42










  • @msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.
    – BlackJack
    Nov 21 at 17:55










  • @msp9011 due to block sizes, etc, disk usage is not the same as total file size.
    – OrangeDog
    Nov 22 at 11:45















up vote
2
down vote

favorite












I want to add and echo the sum of several files using shell script. How do I start?
I have a list of them like that:



$ stat /etc/*.conf | grep Size | cut -f4 -d' '
123
456
789
101112









share|improve this question




















  • 5




    you don't we simply use du?
    – msp9011
    Nov 21 at 7:30






  • 1




    @msp9011, du will calculate also subdirectories
    – Romeo Ninov
    Nov 21 at 7:39






  • 1




    @RomeoNinov here we are checking only files...du -b /etc/*.conf
    – msp9011
    Nov 21 at 8:42










  • @msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.
    – BlackJack
    Nov 21 at 17:55










  • @msp9011 due to block sizes, etc, disk usage is not the same as total file size.
    – OrangeDog
    Nov 22 at 11:45













up vote
2
down vote

favorite









up vote
2
down vote

favorite











I want to add and echo the sum of several files using shell script. How do I start?
I have a list of them like that:



$ stat /etc/*.conf | grep Size | cut -f4 -d' '
123
456
789
101112









share|improve this question















I want to add and echo the sum of several files using shell script. How do I start?
I have a list of them like that:



$ stat /etc/*.conf | grep Size | cut -f4 -d' '
123
456
789
101112






shell-script shell






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 21 at 7:16









muru

35.2k582155




35.2k582155










asked Nov 21 at 7:13









C. Cristi

1647




1647








  • 5




    you don't we simply use du?
    – msp9011
    Nov 21 at 7:30






  • 1




    @msp9011, du will calculate also subdirectories
    – Romeo Ninov
    Nov 21 at 7:39






  • 1




    @RomeoNinov here we are checking only files...du -b /etc/*.conf
    – msp9011
    Nov 21 at 8:42










  • @msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.
    – BlackJack
    Nov 21 at 17:55










  • @msp9011 due to block sizes, etc, disk usage is not the same as total file size.
    – OrangeDog
    Nov 22 at 11:45














  • 5




    you don't we simply use du?
    – msp9011
    Nov 21 at 7:30






  • 1




    @msp9011, du will calculate also subdirectories
    – Romeo Ninov
    Nov 21 at 7:39






  • 1




    @RomeoNinov here we are checking only files...du -b /etc/*.conf
    – msp9011
    Nov 21 at 8:42










  • @msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.
    – BlackJack
    Nov 21 at 17:55










  • @msp9011 due to block sizes, etc, disk usage is not the same as total file size.
    – OrangeDog
    Nov 22 at 11:45








5




5




you don't we simply use du?
– msp9011
Nov 21 at 7:30




you don't we simply use du?
– msp9011
Nov 21 at 7:30




1




1




@msp9011, du will calculate also subdirectories
– Romeo Ninov
Nov 21 at 7:39




@msp9011, du will calculate also subdirectories
– Romeo Ninov
Nov 21 at 7:39




1




1




@RomeoNinov here we are checking only files...du -b /etc/*.conf
– msp9011
Nov 21 at 8:42




@RomeoNinov here we are checking only files...du -b /etc/*.conf
– msp9011
Nov 21 at 8:42












@msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.
– BlackJack
Nov 21 at 17:55




@msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.
– BlackJack
Nov 21 at 17:55












@msp9011 due to block sizes, etc, disk usage is not the same as total file size.
– OrangeDog
Nov 22 at 11:45




@msp9011 due to block sizes, etc, disk usage is not the same as total file size.
– OrangeDog
Nov 22 at 11:45










5 Answers
5






active

oldest

votes

















up vote
2
down vote



accepted










You can do this …



total=0
for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do
total=$(expr $total + $s)
done





share|improve this answer





















  • Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?
    – C. Cristi
    Nov 21 at 7:25






  • 4




    Don't use grep or cut on stat output. stat has format flags (%s) for this
    – ohno
    Nov 21 at 10:20






  • 5




    Also, 'Size' is likely to assume an English or "C " locale.
    – xenoid
    Nov 21 at 13:43


















up vote
12
down vote













stat -c "%s" /etc/*.conf|paste -sd+|bc -l





share|improve this answer





















  • Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.
    – TheDudeAbides
    Nov 21 at 23:20








  • 1




    @TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable
    – Romeo Ninov
    Nov 22 at 10:29


















up vote
12
down vote













Also something like can do the work (with awk)



stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'





share|improve this answer




























    up vote
    10
    down vote













    With bc



    { stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc



    • The stat format adds a + sign and a continuation character after each size

    • a 0 is appended at the end to close the dangling final +






    share|improve this answer




























      up vote
      7
      down vote













      The most straightforward way is to use du -bc:



      $ du -bc /etc/*.conf
      5139 /etc/man_db.conf
      393 /etc/nsswitch.conf
      5532 total


      If you need to extract only the number of bytes, pipe the output to awk:



      $ du -bc /etc/*.conf | awk 'END { print $1 }'
      5532





      share|improve this answer





















      • Hope ... OP doesn't require the grand total size of all files...
        – msp9011
        Nov 21 at 8:55






      • 1




        Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.
        – Ruslan
        Nov 21 at 17:04












      • @Ruslan The awk line also strips off the total
        – Izkata
        Nov 21 at 18:09










      • @Izkata oh, indeed, didn't notice this bit.
        – Ruslan
        Nov 21 at 18:49











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      5 Answers
      5






      active

      oldest

      votes








      5 Answers
      5






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes








      up vote
      2
      down vote



      accepted










      You can do this …



      total=0
      for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do
      total=$(expr $total + $s)
      done





      share|improve this answer





















      • Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?
        – C. Cristi
        Nov 21 at 7:25






      • 4




        Don't use grep or cut on stat output. stat has format flags (%s) for this
        – ohno
        Nov 21 at 10:20






      • 5




        Also, 'Size' is likely to assume an English or "C " locale.
        – xenoid
        Nov 21 at 13:43















      up vote
      2
      down vote



      accepted










      You can do this …



      total=0
      for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do
      total=$(expr $total + $s)
      done





      share|improve this answer





















      • Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?
        – C. Cristi
        Nov 21 at 7:25






      • 4




        Don't use grep or cut on stat output. stat has format flags (%s) for this
        – ohno
        Nov 21 at 10:20






      • 5




        Also, 'Size' is likely to assume an English or "C " locale.
        – xenoid
        Nov 21 at 13:43













      up vote
      2
      down vote



      accepted







      up vote
      2
      down vote



      accepted






      You can do this …



      total=0
      for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do
      total=$(expr $total + $s)
      done





      share|improve this answer












      You can do this …



      total=0
      for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do
      total=$(expr $total + $s)
      done






      share|improve this answer












      share|improve this answer



      share|improve this answer










      answered Nov 21 at 7:20









      Red Cricket

      1,20431731




      1,20431731












      • Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?
        – C. Cristi
        Nov 21 at 7:25






      • 4




        Don't use grep or cut on stat output. stat has format flags (%s) for this
        – ohno
        Nov 21 at 10:20






      • 5




        Also, 'Size' is likely to assume an English or "C " locale.
        – xenoid
        Nov 21 at 13:43


















      • Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?
        – C. Cristi
        Nov 21 at 7:25






      • 4




        Don't use grep or cut on stat output. stat has format flags (%s) for this
        – ohno
        Nov 21 at 10:20






      • 5




        Also, 'Size' is likely to assume an English or "C " locale.
        – xenoid
        Nov 21 at 13:43
















      Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?
      – C. Cristi
      Nov 21 at 7:25




      Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?
      – C. Cristi
      Nov 21 at 7:25




      4




      4




      Don't use grep or cut on stat output. stat has format flags (%s) for this
      – ohno
      Nov 21 at 10:20




      Don't use grep or cut on stat output. stat has format flags (%s) for this
      – ohno
      Nov 21 at 10:20




      5




      5




      Also, 'Size' is likely to assume an English or "C " locale.
      – xenoid
      Nov 21 at 13:43




      Also, 'Size' is likely to assume an English or "C " locale.
      – xenoid
      Nov 21 at 13:43












      up vote
      12
      down vote













      stat -c "%s" /etc/*.conf|paste -sd+|bc -l





      share|improve this answer





















      • Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.
        – TheDudeAbides
        Nov 21 at 23:20








      • 1




        @TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable
        – Romeo Ninov
        Nov 22 at 10:29















      up vote
      12
      down vote













      stat -c "%s" /etc/*.conf|paste -sd+|bc -l





      share|improve this answer





















      • Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.
        – TheDudeAbides
        Nov 21 at 23:20








      • 1




        @TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable
        – Romeo Ninov
        Nov 22 at 10:29













      up vote
      12
      down vote










      up vote
      12
      down vote









      stat -c "%s" /etc/*.conf|paste -sd+|bc -l





      share|improve this answer












      stat -c "%s" /etc/*.conf|paste -sd+|bc -l






      share|improve this answer












      share|improve this answer



      share|improve this answer










      answered Nov 21 at 7:22









      Ipor Sircer

      10.3k11024




      10.3k11024












      • Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.
        – TheDudeAbides
        Nov 21 at 23:20








      • 1




        @TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable
        – Romeo Ninov
        Nov 22 at 10:29


















      • Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.
        – TheDudeAbides
        Nov 21 at 23:20








      • 1




        @TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable
        – Romeo Ninov
        Nov 22 at 10:29
















      Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.
      – TheDudeAbides
      Nov 21 at 23:20






      Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.
      – TheDudeAbides
      Nov 21 at 23:20






      1




      1




      @TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable
      – Romeo Ninov
      Nov 22 at 10:29




      @TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable
      – Romeo Ninov
      Nov 22 at 10:29










      up vote
      12
      down vote













      Also something like can do the work (with awk)



      stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'





      share|improve this answer

























        up vote
        12
        down vote













        Also something like can do the work (with awk)



        stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'





        share|improve this answer























          up vote
          12
          down vote










          up vote
          12
          down vote









          Also something like can do the work (with awk)



          stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'





          share|improve this answer












          Also something like can do the work (with awk)



          stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 21 at 7:35









          Romeo Ninov

          5,01431627




          5,01431627






















              up vote
              10
              down vote













              With bc



              { stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc



              • The stat format adds a + sign and a continuation character after each size

              • a 0 is appended at the end to close the dangling final +






              share|improve this answer

























                up vote
                10
                down vote













                With bc



                { stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc



                • The stat format adds a + sign and a continuation character after each size

                • a 0 is appended at the end to close the dangling final +






                share|improve this answer























                  up vote
                  10
                  down vote










                  up vote
                  10
                  down vote









                  With bc



                  { stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc



                  • The stat format adds a + sign and a continuation character after each size

                  • a 0 is appended at the end to close the dangling final +






                  share|improve this answer












                  With bc



                  { stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc



                  • The stat format adds a + sign and a continuation character after each size

                  • a 0 is appended at the end to close the dangling final +







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Nov 21 at 10:06









                  xenoid

                  2,5981724




                  2,5981724






















                      up vote
                      7
                      down vote













                      The most straightforward way is to use du -bc:



                      $ du -bc /etc/*.conf
                      5139 /etc/man_db.conf
                      393 /etc/nsswitch.conf
                      5532 total


                      If you need to extract only the number of bytes, pipe the output to awk:



                      $ du -bc /etc/*.conf | awk 'END { print $1 }'
                      5532





                      share|improve this answer





















                      • Hope ... OP doesn't require the grand total size of all files...
                        – msp9011
                        Nov 21 at 8:55






                      • 1




                        Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.
                        – Ruslan
                        Nov 21 at 17:04












                      • @Ruslan The awk line also strips off the total
                        – Izkata
                        Nov 21 at 18:09










                      • @Izkata oh, indeed, didn't notice this bit.
                        – Ruslan
                        Nov 21 at 18:49















                      up vote
                      7
                      down vote













                      The most straightforward way is to use du -bc:



                      $ du -bc /etc/*.conf
                      5139 /etc/man_db.conf
                      393 /etc/nsswitch.conf
                      5532 total


                      If you need to extract only the number of bytes, pipe the output to awk:



                      $ du -bc /etc/*.conf | awk 'END { print $1 }'
                      5532





                      share|improve this answer





















                      • Hope ... OP doesn't require the grand total size of all files...
                        – msp9011
                        Nov 21 at 8:55






                      • 1




                        Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.
                        – Ruslan
                        Nov 21 at 17:04












                      • @Ruslan The awk line also strips off the total
                        – Izkata
                        Nov 21 at 18:09










                      • @Izkata oh, indeed, didn't notice this bit.
                        – Ruslan
                        Nov 21 at 18:49













                      up vote
                      7
                      down vote










                      up vote
                      7
                      down vote









                      The most straightforward way is to use du -bc:



                      $ du -bc /etc/*.conf
                      5139 /etc/man_db.conf
                      393 /etc/nsswitch.conf
                      5532 total


                      If you need to extract only the number of bytes, pipe the output to awk:



                      $ du -bc /etc/*.conf | awk 'END { print $1 }'
                      5532





                      share|improve this answer












                      The most straightforward way is to use du -bc:



                      $ du -bc /etc/*.conf
                      5139 /etc/man_db.conf
                      393 /etc/nsswitch.conf
                      5532 total


                      If you need to extract only the number of bytes, pipe the output to awk:



                      $ du -bc /etc/*.conf | awk 'END { print $1 }'
                      5532






                      share|improve this answer












                      share|improve this answer



                      share|improve this answer










                      answered Nov 21 at 8:43









                      Martin Frodl

                      893




                      893












                      • Hope ... OP doesn't require the grand total size of all files...
                        – msp9011
                        Nov 21 at 8:55






                      • 1




                        Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.
                        – Ruslan
                        Nov 21 at 17:04












                      • @Ruslan The awk line also strips off the total
                        – Izkata
                        Nov 21 at 18:09










                      • @Izkata oh, indeed, didn't notice this bit.
                        – Ruslan
                        Nov 21 at 18:49


















                      • Hope ... OP doesn't require the grand total size of all files...
                        – msp9011
                        Nov 21 at 8:55






                      • 1




                        Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.
                        – Ruslan
                        Nov 21 at 17:04












                      • @Ruslan The awk line also strips off the total
                        – Izkata
                        Nov 21 at 18:09










                      • @Izkata oh, indeed, didn't notice this bit.
                        – Ruslan
                        Nov 21 at 18:49
















                      Hope ... OP doesn't require the grand total size of all files...
                      – msp9011
                      Nov 21 at 8:55




                      Hope ... OP doesn't require the grand total size of all files...
                      – msp9011
                      Nov 21 at 8:55




                      1




                      1




                      Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.
                      – Ruslan
                      Nov 21 at 17:04






                      Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.
                      – Ruslan
                      Nov 21 at 17:04














                      @Ruslan The awk line also strips off the total
                      – Izkata
                      Nov 21 at 18:09




                      @Ruslan The awk line also strips off the total
                      – Izkata
                      Nov 21 at 18:09












                      @Izkata oh, indeed, didn't notice this bit.
                      – Ruslan
                      Nov 21 at 18:49




                      @Izkata oh, indeed, didn't notice this bit.
                      – Ruslan
                      Nov 21 at 18:49


















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