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Full Discussion: command to extract sub-string out of file names
Top Forums UNIX for Dummies Questions & Answers command to extract sub-string out of file names Post 302518371 by lv99 on Friday 29th of April 2011 12:16:12 PM
Old 04-29-2011
Thanks, It works well with scenarios in the sample. Now, some files have name without trailing numbers. that throw the matching partern off.

ex: DEPT_MUSICLAB_D_20110327.DAT

so i have to do it the tradditional way as

ls DEPT*.DAT | cut -f2 -d'_' | sort | uniq > tmp
sed -i 's/LAB//g' tmp ; sed -i 's/LEC//g' tmp

This will get leave just the name of the class at the end.
 

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LEARN ABOUT DEBIAN

ns_tmpnam

ns_tmp(3aolserver)					    AOLserver Built-In Commands 					ns_tmp(3aolserver)

__________________________________________________________________________________________________________________________________________________

NAME

       ns_mktemp, ns_tmpnam - commands

SYNOPSIS

       ns_mktemp template

       ns_tmpnam
_________________________________________________________________

DESCRIPTION

       ns_mktemp  returns  a unique filename based on the template you specify.  ns_tmpnam returns a filename that can safely be used for a tempo-
       rary file.

       The template for ns_mktemp should contain a string with six trailing Xs, which will be replaced with an alpha-numeric string of six charac-
       ters chosen to make the filename unique.  If template does not end with six trailing Xs the empty string will be returned.

       ns_tmpnam  calls  the  tmpnam()	C  library function, and the results will depend on your operating system.  On Irix, for example, tmpnam()
       always generate a file name using the path-prefix defined as P_tmpdir in the header file which is "/var/tmp/".

EXAMPLES

	nscp> ns_tmpnam ;# On Linux
	/tmp/filevuLwaE

	nscp> ns_mktemp /tmp/foobar.XXXXXX
	/tmp/foobar.p6SlaC

SEE ALSO

       nsd(1), mktemp(3), tmpnam(3)

KEYWORDS

AOLserver								4.0							ns_tmp(3aolserver)
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