Replace String matching wildcard pattern


 
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# 1  
Old 12-04-2018
Replace String matching wildcard pattern

Hi,

I know how to replace a string with another in a file.

But, i wish to replace the below string pattern

EncryptedPassword="{gafgfa}]\asffafsf312a" i.e EncryptedPassword="<any random string>"

To

EncryptedPassword=""

i.e remove the random password to a empty string.

Can you please let me know how can I achieve this ?

Last edited by mohtashims; 12-04-2018 at 08:38 AM..
# 2  
Old 12-04-2018
This is a job for sed Smilie

Code:
sed -e 's/EncryptedPassword="[^"]*"/EncryptedPassword=""/'

This User Gave Thanks to derekludwig For This Post:
# 3  
Old 12-04-2018
works !! thank you
# 4  
Old 12-04-2018
Or with a back-reference; for example if you allow spaces around the = it will keep them.
Code:
sed 's/\(EncryptedPassword *= *\)"[^"]*"/\1""/'

In contrast to .* the [^"]* does a minimum match; important in case more "strings" follow it.
perl -pe is quite similar to sed (and even to awk); a minimum match can be elegantly done by a ? after a "greedy" *:
Code:
perl -pe 's/(EncryptedPassword *= *)".*?"/$1""/'

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