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yet another sed/awk question

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# 1  
Old 04-04-2011
yet another sed/awk question
Unix Guru's ,

I have a file all_files.txt containing data as follows

Code:
all_files.txt

first  file : /a/b/c/file.sh  first second CLIENT1
second file : /a/b/c/file.sh  first second CLIENT1

first file : /a/b/c/file.sh  first second CLIENT2
second file : /a/b/c/file.sh  first second CLIENT2

first file : /a/b/c/file.sh  first second CLIENT3
second file : /a/b/c/file.sh  first second CLIENT3

first file : /a/b/c/file.sh  first second CLIENT4
second file : /a/b/c/file.sh  first second CLIENT4

I would like to replace line2 for CLIENT2

Code:
second file : /a/b/c/file.sh  first second CLIENT2
with
second file : /a/b/c/script.sh  driver file CLIENT2

If I can make CLIENT1,2,3,4 as a variable i will be able to selectively modify the file.
any help is appreciated.
# 2  
Old 04-04-2011
Code:
awk '$0~/^second/{sub(".*","second file : /a/b/c/script.sh  driver file "$NF,$0)}1' infile

or

Code:
nawk '$0~/^second/{sub(".*","second file : /a/b/c/script.sh  driver file "$NF,$0)}1' infile

Last edited by ctsgnb; 04-04-2011 at 11:28 AM..
This User Gave Thanks to ctsgnb For This Post:
jville
# 3  
Old 04-04-2011
Code:
nawk -v c=CLIENT2 '$NF==c{$(NF-2)="driver";$(NF-1)="file"}1' myFile

# 4  
Old 04-04-2011
i do not have nwak installed.
# 5  
Old 04-04-2011
Code:
sed -nr 's#(^second file : ).*( CLIENT2)#\1/a/b/c/script.sh driver file\2#;p' yourFile

replace the parts that you like to varialble.
This User Gave Thanks to sk1418 For This Post:
jville
# 6  
Old 04-04-2011
Quote:
Originally Posted by jville
i do not have nwak installed.
Surprised? Use 'awk' instead.
This User Gave Thanks to vgersh99 For This Post:
jville
# 7  
Old 04-04-2011
thankyou guys for your valueble input.
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