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help on sed replacing special characters

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# 1  
Old 01-18-2008
help on sed replacing special characters
Hello,

I have a file with many lines with below format:

\abc\\1234
jkl\\567
def\\345
\pqr\\567
\xyz\\234


Here, i need to do 2 things.

1. replace \\ with \

2. remove starting \

so output to be as below:


abc\1234
jkl\567
def\345
pqr\567
xyz\234



Thanks
Prvn
# 2  
Old 01-18-2008
try this...

sed -e '{s/\\\\/\\/g;s/^\\//}' input.txt
# 3  
Old 01-18-2008
Code:
sed 's \\\\ \\ ;s ^\\  ' filename

# 4  
Old 01-18-2008
Hi radoulov, Your solution is excellent and worked great..Thanks


quintet, Thank you. Your solution throwing error below:
sed: command garbled: {s/\\\\/\\/g;s/^\\//}


Thanks much,
Prvn
# 5  
Old 01-18-2008
Quote:
Originally Posted by prvnrk
Hi radoulov, Your solution is excellent and worked great..Thanks


quintet, Thank you. Your solution throwing error below:
sed: command garbled: {s/\\\\/\\/g;s/^\\//}


Thanks much,
Prvn
quintet solution works once you take out "{" and "}" characters

sed -e 's/\\\\/\\/g' -e 's/^\\//' input.txt
# 6  
Old 01-18-2008
Quote:
Originally Posted by prvnrk
Hello,

I have a file with many lines with below format:

\abc\\1234
jkl\\567
def\\345
\pqr\\567
\xyz\\234


Here, i need to do 2 things.

1. replace \\ with \

2. remove starting \

so output to be as below:


abc\1234
jkl\567
def\345
pqr\567
xyz\234



Thanks
Prvn
Code:
sed 's?\\??' file

# 7  
Old 01-18-2008
Quote:
Originally Posted by shamrock
Code:
sed 's?\\??' file

shamrock,

Have you test your solution?
This:

Code:
echo '\abc\\1234' | sed 's?\\??'

gives:

Code:
abc\\1234

Regards
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