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Top Forums Shell Programming and Scripting How to remove duplicate lines? Post 302998026 by RavinderSingh13 on Wednesday 24th of May 2017 09:37:14 AM
Old 05-24-2017
Quote:
Originally Posted by nalu
Hi Ravinder,
Thanks for your prompt response.
This code is removing duplicate lines.
Code:
echo "$result_text" | awk '{sub(/[[:space:]]+$/,"");} !A[$0]++'

If I assign the result to a variable it's not working.
Code:
result_text1=$(echo "$result_text" | awk '{sub(/[[:space:]]+$/,"");} !A[$0]++')
echo $result_text1

Please help me.
Thanks in advance.
Hello nalu,

You could hit THANKS button for saying thanks to anyone here.
Try following and let me know if this helps you. I am getting proper output from this command.
Code:
result_text1=$(echo "$result_text" | awk '{sub(/[[:space:]]+$/,"");} !A[$0]++')
echo "$result_text1"

Thanks,
R. Singh

Last edited by RavinderSingh13; 05-24-2017 at 10:51 AM..
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 5.10 3 Aug 1994 echo(1B)
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