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How to find duplicate commands in the search path?

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Top Forums Shell Programming and Scripting How to find duplicate commands in the search path?
# 8  
Old 03-10-2010
What Operating System and shell do you have?
# 9  
Old 03-10-2010
I don't know that you'd want to use this, but I did this recently to create a basic "whereis" command for my iPhone.
Code:
echo $PATH | tr ':' '\n' | while read line; do ls "${line}/${COMMAND}" 2>/dev/null; done

test...
# COMMAND=grep
# echo $PATH | tr ':' '\n' | while read line; do ls "${line}/${COMMAND}" 2>/dev/null; done
/usr/bin/grep
/bin/grep
#

It tries to list the command for every directory in your path. If it's not found, the ls error goes to /dev/null. If it is found, you get ls's output showing where it was found.
# 10  
Old 03-15-2010
er, my 2nd post does it i think.
if you use parentheses it doesn't clobber IFS.

what more is there?

Code:
( IFS=:;find  $PATH -type f |fmt -1| sort| uniq -d )

Last edited by radoulov; 03-15-2010 at 06:31 AM.. Reason: Please use code tags!
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