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# 1  
Old 09-09-2016
sed search
Hello,

I know how to use sed for simple search but i need to search something like below in a file.

From the below string, i need to find and replace only ./ with a $ using sed.

Code:
./abcd/str.xyz

Thanks in advance
KK
Last edited by Scrutinizer; 09-09-2016 at 06:47 PM.. Reason: code tags
# 2  
Old 09-09-2016
What have you tried?
# 3  
Old 09-09-2016
I tried below where replacenames2.txt is the file to search and this is replacing the strings with just . as well.

Code:
sed -i 's|'./'|'$'|g' replacenames2.txt

Last edited by Scrutinizer; 09-09-2016 at 06:46 PM..
# 4  
Old 09-09-2016
First off, -i is usually a bad idea. You may have notice that, if you hadn't had a backup, your original data would be mangled beyond recall now.

Second, . means something special to sed, "any character", not a literal .

sed 's/[.]/|$|g' inputfile > different-output-file
This User Gave Thanks to Corona688 For This Post:
Pavan Kumar19
# 5  
Old 09-09-2016
Thanks for the details. I haven't explained it better earlier. Below is the output I am expecting.

Input string
Code:
./abcd/str.xyz

output String
Code:
$abcd/str.xyz

I want sed to replace only ./ with $

Thanks
Last edited by Scrutinizer; 09-09-2016 at 06:43 PM.. Reason: code tags
# 6  
Old 09-09-2016
Try:
Code:
sed 's/^\.\//$/'

or
Code:
sed 's|^\./|$|'

# 7  
Old 09-09-2016
It's generating the output like below.
Code:
$abcd$str$xyz

Expected output is
Code:
$abcd/str.xyz
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