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Full Discussion: Detail on For loop for multiple file input and bash variable usage
Top Forums Shell Programming and Scripting Detail on For loop for multiple file input and bash variable usage Post 302781353 by Don Cragun on Saturday 16th of March 2013 09:24:56 AM
Old 03-16-2013
I don't understand what you're asking about fortran code, but getting sets of 3 files in sorted order in the shell is not hard. This doesn't do anything very useful, but may be a suitable example to show you what needs to be done to meet your requirements:
Code:
#!/bin/ksh
ls *.txt|sort -t"_" -k2n,2|while read f1 && read f2 && read f3
do      echo processing $f1, $f2, and $f3
done

Note that this won't work if any of your *.txt filenames contain whitespace characters, and will silently ignore the last one or two *.txt files if the number of *.txt files is not an integral multiple of 3. In a directory containing the files:
Code:
ABC_6.txt
B.txt
DEF_5.txt
GHI_7.txt
a.txt
abc_123.txt
bcd_987.txt
cde_456.txt
tester
z.txt

this script produces the output:
Code:
processing B.txt, a.txt, and z.txt
processing DEF_5.txt, ABC_6.txt, and GHI_7.txt
processing abc_123.txt, cde_456.txt, and bcd_987.txt

This User Gave Thanks to Don Cragun For This Post:
Akshay Hegde
 

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LEARN ABOUT DEBIAN

xclip-copyfile

XCLIP-COPYFILE(1)					      General Commands Manual						 XCLIP-COPYFILE(1)

NAME

       xclip-copyfile, xclip-cutfile, xclip-pastefile - copy and move files via the X clipboard

SYNOPSIS

       xclip-copyfile [-p] FILES...

       xclip-cutfile [-p] FILES...

       xclip-pastefile

DESCRIPTION

       xclip-copyfile copies files into the X clipboard, recursing into directories.

       xclip-cutfile copies the files, but also deletes them afterwards.

       -p     preserve path formation

       xclip-pastefile pastes the files out of the clipboard

EXAMPLES

       Copying a file to a remote host

       [maggie.lkpg.cendio.se ~]$ echo "A file created on ${HOSTNAME}" > file1
       [maggie.lkpg.cendio.se ~]$ xclip-copyfile file1
       [sofie.homeip.net ~/doc]$ xclip-pastefile
       file1
       [sofie.homeip.net ~/doc]$ cat file1
       A file created on maggie.lkpg.cendio.se

       Copying an entire tree structure

       [sofie.homeip.net ~]$ xclip-copyfile doc
       [maggie.lkpg.cendio.se ~/tmp]$ xclip-pastefile
       doc/
       doc/letter-mom-april.txt
       doc/file1
       doc/letter-dad-march.txt

       Copying files with preserved path information

       [maggie.lkpg.cendio.se ~]$ xclip-copyfile -p /etc/sysconfig/grub
       tar: Removing leading `/' from member names
       [sofie.homeip.net ~/tmp]$ xclip-pastefile
       etc/sysconfig/grub
       [sofie.homeip.net ~/tmp]$ ls etc/sysconfig/grub
       etc/sysconfig/grub

       Moving files

       [sofie.homeip.net ~]$ ls letter-brother-may.txt
       letter-brother-may.txt
       [sofie.homeip.net ~]$ xclip-cutfile letter-brother-may.txt
       [sofie.homeip.net ~]$ ls letter-brother-may.txt
       ls: cannot access letter-brother-may.txt: No such file or directory
       [sofie.homeip.net ~]$ cd doc
       [sofie.homeip.net ~/doc]$ xclip-pastefile
       letter-brother-may.txt

AUTHORS

       This  manual  page  was written by Maximilian Gass <mxey@cloudconnected.org> for the Debian project. It may be used for everything else, of
       course.

																 XCLIP-COPYFILE(1)
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