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Replacing a string with a space

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# 1  
Old 05-11-2010
Replacing a string with a space
I'm trying to replace a string "99999999'" with the blank where ever is there in the file. Could you please help in unix scripting.

Thank You.
# 2  
Old 05-11-2010
Use this. Let me know how it goes.Smilie

Code:
sed -e 's/<string>/ /g' < filename


HTH,

Regards,

Praveen
# 3  
Old 05-11-2010
Code:
sed 's/99999999/ /g' infile

# 4  
Old 05-11-2010
The responses provided by sunpraveen and saxxon will work; however, the results will only appear on the standard output, which is generally the screen. If you want to store the changes in the original file, you will need to redirect the standard output into a file. If the file will be the original file, you will need to rename it. For example:
Code:
mv infile infile.backup
sed 's/99999999/ /g' infile.backup > infile


In this example, I append ".backup" to the end of the file name and redirect the output into a new file with the original file's name.
# 5  
Old 05-11-2010
for that case, you can use -i option in sed if that is available in your version.

Code:
-i[SUFFIX], --in-place[=SUFFIX]

              edit files in place (makes backup if extension supplied)

# 6  
Old 05-11-2010
if you don't have the -i option...

Code:
{ rm infile && sed 's/99999999/ /g' > infile;} < infile

# 7  
Old 05-11-2010
Or you could use Perl -

Code:
perl -pi.bak -e 's/99999999/ /g' <filename>

This will back up file <filename> to <filename>.bak and then replace each occurrence of "99999999" to " " in <filename>.

tyler_durden
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