character replace


 
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# 1  
Old 01-09-2009
character replace

Hi,

I have rows in a file, in each row string starts with "A200819097564".

I want to replace the first character A with space.So the string looks like " 200819097564"

I tried "tr -s "A2008" " 2008""
But did not get the required outpit.

Thanks.
# 2  
Old 01-09-2009
With sed:

Code:
sed 's/^./ /'

Regards
# 3  
Old 01-09-2009
character replace

I tired the below command, it worked.But doubt is would it replae only the first letter in each row with space

sed "s/A2009/ 2009/g".

franklin,

sed 's/^./ /', your command would do the same thing?

thanks.
# 4  
Old 01-10-2009
Quote:
Originally Posted by pradeep_script
I tired the below command, it worked.But doubt is would it replae only the first letter in each row with space

sed "s/A2009/ 2009/g".

franklin,

sed 's/^./ /', your command would do the same thing?

thanks.
Code:
 sed "s/A2009/ 2009/g"

Your command replaces every "A2009" in a line, not only on the first position.
To match the pattern "A2009" at first position of a line, add a circumflex "^" at the begin of the pattern:

Code:
sed 's/^A2009/ 2009/'

This command:

Code:
sed 's/^./ /'

replaces every character at the begin of a line with a space.

Regards
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