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How to modify the contents of file using script

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# 1  
Old 04-30-2009
How to modify the contents of file using script
Hi,

Can anyone pls let me know how can i modify the file contents thru script.

Eg.
I have file abc.dat that contains below lines
Merge.resync.cycleFlag
Merge.resync.logFlag
Merge.resync.maxByteRate
Merge.resync.maxSearch
Merge.resync.rate
Merge.resync.tickLog
Merge.resync.tickLogFmt

I want to comment out some lines say

Merge.resync.cycleFlag
Merge.resync.logFlag
#Merge.resync.maxByteRate
#Merge.resync.maxSearch
#Merge.resync.rate
#Merge.resync.tickLog
Merge.resync.tickLogFmt

Pls let me know how i can proceed?
# 2  
Old 04-30-2009
Quote:
Originally Posted by sdosanjh
Hi,

Can anyone pls let me know how can i modify the file contents thru script.

Eg.
I have file abc.dat that contains below lines
Merge.resync.cycleFlag
Merge.resync.logFlag
Merge.resync.maxByteRate
Merge.resync.maxSearch
Merge.resync.rate
Merge.resync.tickLog
Merge.resync.tickLogFmt

I want to comment out some lines say

Merge.resync.cycleFlag
Merge.resync.logFlag
#Merge.resync.maxByteRate
#Merge.resync.maxSearch
#Merge.resync.rate
#Merge.resync.tickLog
Merge.resync.tickLogFmt

Pls let me know how i can proceed?

First, you will need to define the logic on when the lines should be commented out. Then we can do it.

Cheers,
Devaraj Takhellambam
# 3  
Old 04-30-2009
Quote:
Originally Posted by devtakh
First, you will need to define the logic on when the lines should be commented out. Then we can do it.

Cheers,
Devaraj Takhellambam

Actually there are multiple files with the same contents, but line numbers may differ in each file. it is possible using awk and redirecting the o/p to new file and again move back the original file, but if any other option is possible?
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