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Top Forums Shell Programming and Scripting Comparing list of files in parallel Post 302960832 by summer_cherry on Friday 20th of November 2015 02:09:51 AM
Old 11-20-2015
hope below prototype can help you some

Code:
num_of_files=`ls leo| wc -l`
loop_size=$((${num_of_files}/2))
i=1
while [ $i -le $loop_size ];do
  let tmp=$i+$loop_size
  echo "comparing file_${i} with file_${tmp}"
  let i=$i+1
done

root@qas0009[23:08:25]:/tmp>ls leo
Code:
file_1  file_10  file_11  file_12  file_13  file_14  file_15  file_16  file_17  file_18  file_19  file_2  file_20  file_3  file_4  file_5  file_6  file_7  file_8  file_9

output
Code:
comparing file_1 with file_11
comparing file_2 with file_12
comparing file_3 with file_13
comparing file_4 with file_14
comparing file_5 with file_15
comparing file_6 with file_16
comparing file_7 with file_17
comparing file_8 with file_18
comparing file_9 with file_19
comparing file_10 with file_20

 

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DH_INSTALLDEB(1)						     Debhelper							  DH_INSTALLDEB(1)

NAME
dh_installdeb - install files into the DEBIAN directory SYNOPSIS
dh_installdeb [debhelperoptions] DESCRIPTION
dh_installdeb is a debhelper program that is responsible for installing files into the DEBIAN directories in package build directories with the correct permissions. FILES
package.postinst package.preinst package.postrm package.prerm These maintainer scripts are installed into the DEBIAN directory. Inside the scripts, the token #DEBHELPER# is replaced with shell script snippets generated by other debhelper commands. package.triggers package.shlibs These control files are installed into the DEBIAN directory. Note that package.shlibs is only installed in compat level 9 and earlier. In compat 10, please use dh_makeshlibs(1). package.conffiles This control file will be installed into the DEBIAN directory. In v3 compatibility mode and higher, all files in the etc/ directory in a package will automatically be flagged as conffiles by this program, so there is no need to list them manually here. package.maintscript Lines in this file correspond to dpkg-maintscript-helper(1) commands and parameters. However, the "maint-script-parameters" should not be included as debhelper will add those automatically. Example: # Correct rm_conffile /etc/obsolete.conf 0.2~ foo # INCORRECT rm_conffile /etc/obsolete.conf 0.2~ foo -- "$@" In compat 10 or later, any shell metacharacters will be escaped, so arbitrary shell code cannot be inserted here. For example, a line such as "mv_conffile /etc/oldconffile /etc/newconffile" will insert maintainer script snippets into all maintainer scripts sufficient to move that conffile. It was also the intention to escape shell metacharacters in previous compat levels. However, it did not work properly and as such it was possible to embed arbitrary shell code in earlier compat levels. The dh_installdeb tool will do some basic validation of some of the commands listed in this file to catch common mistakes. The validation is enabled as a warning since compat 10 and as a hard error in compat 12. SEE ALSO
debhelper(7) This program is a part of debhelper. AUTHOR
Joey Hess <joeyh@debian.org> 11.1.6ubuntu2 2018-05-10 DH_INSTALLDEB(1)
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