07-16-2008
Sed and replacing one occurence of pattern
I would like to use sed to replace one occurence of a pattern in a file. When I use the s/// command it replaces all occurences of the pattern in the file. Should I be using something other than sed?
Thanks
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Hello,
The following sed command is giving error
sed: -e expression #1, char 13: unknown option to `s'
The sed command is
echo "//-----" | sed "s/\/\/---*/$parChk/g"
where parChk="//---ee-"
How can i print the variable value from sed command ?
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Hi
My input file is like this for eg:
abc abc abc abc abc abc
i would like to replace "abc" with "cba" where the occurrence is divisible by 2
of eg here 2nd, 4th and 6th occurence shud be replace
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Input:
>abc|123456|def|EXIT|
>abc|203456|def|EXIT2|
>abc|234056|def|EXIT3|
>abc|340056|def|EXIT4|
>abc|456000|def|EXIT5|
.
.
.
Output:
def|EXIT|
def|EXIT2|
def|EXIT3|
def|EXIT4|
def|EXIT5|
.
.
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/RdWrCtrl/IRdWrRepCtl/XI3/XIrdOutEnRdSbComb\/XRdDataGaterEnx
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user=tigger
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some text some text
some text some text
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If the string is of the pattern XxxXyzAbc...
The expected out put from sed has to be Xxx Xyz Abc ...
eg: if the string is QcfEfQfs, then the expected output is Qcf Ef Efs.
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Hi
I have a piece of xml that has a pattern like this
<int>159</int><int>30</int>
I want to find this pattern but only substitute the second part of the pattern to {rid1}.
Is that possible in sed ?
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FILE1.XML
1. <itemList>
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Dear Unix Forums,
I am hoping you can help me with a pattern matching problem.
What am I trying to do?
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Hello.
Here is a file contents :
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INSTR(3) MBK UTILITY FUNCTIONS INSTR(3)
NAME
instr - find an occurence of a string in a string, starting at a specified character.
ORIGIN
This software belongs to the ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Universite Pierre et Marie CURIE, in
Paris, France.
Web : http://asim.lip6.fr/recherche/alliance/
E-mail : alliance-users@asim.lip6.fr
SYNOPSYS
#include "mut.h"
char *instr(s, find, from)
char *s, *find, from;
PARAMETERS
s Pointer to the string to be searched for the pattern
find Pointer to the string to be found, the pattern
from Character to be searched backwards before searching for the pattern
DESCRIPTION
instr searches the first occurence of the string find in the string s, starting its search at the last occurence of the from character in
the string s.
If either s or find is NULL, the function returns NULL. If from is (char)0, the pattern is searched from the begining of s.
This quite exotic behaviour is useful to search the occurence of a name in a string resulting from a flatten, when only a terminal object
name is to be taken into account.
RETURN VALUES
instr return NULL either if the pattern find is not present in the searched string s, or if one at least of these two string are NULL. If
the pattern is found, a value different from NULL is returned.
EXAMPLE
#include "mut.h"
/* check for the pattern 'ck' anywhere in the string */
#define contains_ck(name)instr(name, "ck", ' ')
/* check for the pattern 'ck' in the signal name, not instance ones */
#define isclock(ptsig) instr(getsigname(ptsig), "ck", SEPAR)
SEE ALSO
mbk(1), isvdd(3), isvss(3).
BUG REPORT
This tool is under development at the ASIM department of the LIP6 laboratory.
We need your feedback to improve documentation and tools.
ASIM
/LIP6 October 1, 1997 INSTR(3)