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Top Forums Shell Programming and Scripting More efficient for loop on files Post 302977913 by RavinderSingh13 on Saturday 23rd of July 2016 01:23:48 PM
Old 07-23-2016
Quote:
Originally Posted by SkySmart
is there a more efficient way to write the following code:
Code:
                        for eachlfile in $(ls -ltcrd ${BACKUPDIR}/${BACKUPNAME}*/content_${BACKUPNAME}* 2>/dev/null | awk '{print $NF}')
                        do
                                echo "=========================="
                                echo ${eachlfile} | awk -F"__" '{print $NF}'
                                echo "=========================="
                                cat ${eachlfile}
                        done

i want to be able to run this on AIX, SunOS and LInux systems. So the solution should be portable.
Hello SkySmart,

Could you please let us know what you are trying to do here. Because I don't think you are trying to traverse directories and trying to get files, if you could explain your requirement with details, we could try to help.

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
 

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echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.11 3 Aug 1994 echo(1B)
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