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Full Discussion: How to find duplicate commands in the search path?
Top Forums Shell Programming and Scripting How to find duplicate commands in the search path? Post 302402519 by LessNux on Wednesday 10th of March 2010 04:40:05 AM
Old 03-10-2010
Question How to find duplicate commands in the search path?
I wanted to see if there is any duplicate of a specific command in the command search path. The following code will list all copies of "openssl" in the command search path.

Code:
find `printenv PATH | sed "s/:/ /g"`  -maxdepth 1  -name openssl

However, the above code would fail if the search path contains any directory whose name contains a space such as "my commands". The main reason for the failure is that a space is the delimiter in the list of directories for the "find" command.

The following workaround changes the delimiter from a space to a colon by modifying the global variable IFS.
Code:
IFS=":"; find `printenv PATH`  -maxdepth 1  -name openssl; IFS=$' \t\n';

However, I do not want to modify global variables. Can anyone suggest me any better methods? The method must work even if a directory name contains a space.

Thanks in advance.
Last edited by radoulov; 03-10-2010 at 05:44 AM.. Reason: Please use code tags!
 

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LEARN ABOUT OPENSOLARIS

printenv

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

NAME

       printenv - display environment variables currently set

SYNOPSIS

       /usr/ucb/printenv [variable]

DESCRIPTION

       printenv prints out the values of the variables in the environment. If a variable is specified, only its value is printed.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       csh(1), echo(1), sh(1), stty(1), tset(1B), attributes(5), environ(5)

DIAGNOSTICS

       If a variable is specified and it is not defined in the environment, printenv returns an exit status of 1.

SunOS 5.11							    14 Sep 1992 						      printenv(1B)
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