For single character replacement (or removal) use "tr". For string to string replacement use sed.
echo $var | tr "e" "o"
-or-
echo $var | sed "s/e/o/g" # (the '/g' means globally)
Mandar Ghosalkar <[EMAIL PROTECTED]> wrote:
check this question from korn faq at
Q24. How do I do global substitutions on the contents of shell variables?
A24. Use // instead of / for global substitution, ${var//aa/bb} will
expand to the value of with each "aa" replace by "bb".
so i tried
$ var=tester
$ echo $var
tester
$ echo ${var//e/o}
bad substitution
$
anyone out there :)
-Mandar
-----Original Message-----
From: Big Planet [mailto:[EMAIL PROTECTED]]
Sent: Friday, March 23, 2001 7:56 PM
To: Multiple recipients of list ORACLE-L
Subject: Unix question
Hi geeks ,
How can I do substr and instr kind of operaion in unix shell script . is it possible ?
like i have one paramter as "hostname" .. I want to trim quotes surrounding the hostname .
One more question , is possible to read another text file line by line using a shel script and then edit that file .
Actually I have this configuration file for my system which have keywords like $HOSTNAME$ , $SCHEMA$ which I want to replace with actual values at the time of installation by asking questions to the user.
TIA
--Big planet
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