i want to delete a file based on existing file in a directory - Shell Programming and Scripting

srivsn · #1 04-10-2006

hi

i am having four files in a directory.like

1)sampleRej
2)exampleRej
3)samplemain
4)examplemain

my requirement is i have to search for the rejected files (sampleRej,exampleRej) in a directory.if these files in that directory then i have to delete the main files (samplemain,examplemain)

directoryname:: abc

please help me.

thanks

vino · #2 04-10-2006

Code:

#! /bin/ksh

while read file
do
        rej=${file##${file%???}}
        if [ "$rej" = "Rej" ] ; then
                echo "Remove ${file%???}main"

        fi ;
done < input.txt

d_swapneel14 · #3 04-11-2006

hi

wht does this code do?

rej=${file##${file%???}}

thanks
swapneel

vino · #4 04-11-2006

man sh -> sub topic "Parameter Expansion".

Code:

       ${parameter#word}
       ${parameter##word}
              The  word  is  expanded to produce a pattern just as in pathname
              expansion.  If the pattern matches the beginning of the value of
              parameter,  then  the  result  of  the expansion is the expanded
              value of parameter with the shortest matching pattern (the ``#''
              case) or the longest matching pattern (the ``##'' case) deleted.
              If parameter is @ or *, the pattern removal operation is applied
              to  each  positional parameter in turn, and the expansion is the
              resultant list.  If parameter is an array  variable  subscripted
              with  @  or  *, the pattern removal operation is applied to each
              member of the array in turn, and the expansion is the  resultant
              list.

       ${parameter%word}
       ${parameter%%word}
              The  word  is  expanded to produce a pattern just as in pathname
              expansion.  If the pattern matches a  trailing  portion  of  the
              expanded value of parameter, then the result of the expansion is
              the expanded value of parameter with the shortest matching  pat-
              tern  (the  ``%''  case)  or  the  longest matching pattern (the
              ``%%'' case) deleted.  If parameter  is  @  or  *,  the  pattern
              removal  operation  is  applied  to each positional parameter in
              turn, and the expansion is the resultant list.  If parameter  is
              an  array  variable subscripted with @ or *, the pattern removal
              operation is applied to each member of the array  in  turn,  and
              the expansion is the resultant list.

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
Based on the permision in the dir can i delete the file	arunkumar_mca	UNIX for Dummies Questions & Answers	4	01-08-2008 10:59 AM
Creating a csv file based on Existing file	skywayterrace	Shell Programming and Scripting	3	12-02-2007 06:19 AM
Need to delete the files based on the time stamp of the file	samudha	UNIX for Dummies Questions & Answers	2	06-20-2007 04:02 AM
search file, change existing value based on input (awk help)	nortonloaf	Shell Programming and Scripting	3	12-05-2006 10:35 PM
delete a file from an existing Solaris tar	avnerht	UNIX for Dummies Questions & Answers	2	03-20-2002 02:23 PM

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode