how do u reverse a string using UNIX commands

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Question by shilps
Submitted on 5/13/2004
Related FAQ: Unix - Frequently Asked Questions (1/7) [Frequent posting]
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how do u reverse a string using UNIX commands

Answer by rupert
Submitted on 5/19/2004
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hold a mirror to the screen

Answer by saurabh
Submitted on 6/15/2004
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stand wid your legs up and head down in front of the screen

Answer by aminorex
Submitted on 4/18/2005
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The BSD 'rev' command does this. It is available on my Linux box thanks to the package "util-linux".

Answer by dwatson
Submitted on 6/26/2005
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unix: echo "hello world" \|sed 's/./&\n/g' \|tac \|tr -d '\n' linux: echo "hello world" \|rev dlrow olleh

Answer by dwatson
Submitted on 6/27/2005
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in unix: echo "hello world" \|sed 's/./&\n/g' \|tac \|tr -d '\n' in linux: echo "hello world" \|rev dlrow olleh

Answer by superHelpfulguy
Submitted on 8/1/2005
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thanks for the super-helpful answers!!

Answer by Robert
Submitted on 7/24/2006
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Hi, I dont know the answer i want to know many things from the Unix experts. Thanks®ards Robert.T

Answer by pavan
Submitted on 10/24/2006
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use "rev" command to reverse a string. or we can write our own code as follows: clear echo "Enter the string to be reversed: " read str len=`echo $str \| wc -c` len=`expr $len - 1` rev="" while test $len -gt 0 do rev1=`echo $str \| cut -c$len` rev=$rev$rev1 len=`expr $len - 1` done echo $rev

Answer by David
Submitted on 1/30/2007
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Use awk: e.g., joe maxage=0 is string. Run: echo "joe maxage=0" \| awk '{ print $2" "$1 }'

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