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How to use sed to put string end of line?

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# 1  
Old 10-18-2011
How to use sed to put string end of line?
I have several file as below, and i want to put .txt to specific text contain ^main=EXE^cmd=run script /usr/prog/bd_,

file1
Code:
7.9102 12.1528 16.3672 7.4002
^main=EXE^cmd=run script /usr/prog/bd_123^"
line 16.3672 7.3134 17.8711 6.0981

file 2
Code:
7.9102 12.1528 16.3672 7.4002 
^main=EXE^cmd=run script /usr/prog/bd_148^"
5.6836 17.5998 19.3566 15.5998

file 3
Code:
1.10001
^main=EXE^cmd=run script /usr/prog/bd_165^"
1.10001.888.20.3


I want my output file

file1
Code:
7.9102 12.1528 16.3672 7.4002
^main=EXE^cmd=run script /usr/prog/bd_123.txt^"
line 16.3672 7.3134 17.8711 6.0981

file 2
Code:
7.9102 12.1528 16.3672 7.4002 
^main=EXE^cmd=run script /usr/prog/bd_148.txt^"
5.6836 17.5998 19.3566 15.5998

file 3
Code:
1.10001
^main=EXE^cmd=run script /usr/prog/bd_165.txt^"
1.10001.888.20.3

Last edited by Franklin52; 10-19-2011 at 04:01 AM.. Reason: Please use code tags for data and code samples, thank you
# 2  
Old 10-18-2011
I saw the same topic already, looks like a homework.
# 3  
Old 10-18-2011
please help me

---------- Post updated at 09:53 PM ---------- Previous update was at 09:52 PM ----------

Quote:
Originally Posted by rdcwayx
I saw the same topic already, looks like a homework.
please help me
# 4  
Old 10-19-2011
sed
Hi,
Try this one,
Code:
sed 's/$/addstr/g' file

Cheers,
Ranga:-)
# 5  
Old 10-19-2011
Quote:
Originally Posted by rangarasan
Hi,
Try this one,
Code:
sed 's/$/addstr/g' file

Cheers,
Ranga:-)
thanks for help but using this code will put .txt all of the end of line..i want to put the .txt in the specific line
# 6  
Old 10-19-2011
awk
Hi,

you can use awk to match the pattern and add the string at the end of line,

Code:
awk 'BEGIN{OFS="";}$0 !~ /pattern/{print;}$0 ~ /pattern/{print $0,"addstr";}' input_file

here,
1. pattern must be same in two regex.
2. addstr - going to append in the end of line.

Cheers,
RangaSmilie
# 7  
Old 10-19-2011
See if this sed fills your requirement
Code:
"s#\^main=EXE\^cmd=run script /usr/prog/[Aa-Zz]\{1,5\}_[0-9]\{1,5\}#&.txt#g" file > outfile

It will match a line containing <first part> /usr/prog<any 1 to 5 letters> followed by an underscore and <any 1 to 5 numbers >.
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