Replace String matching wildcard pattern

Shell Programming and Scripting
1

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 ?

2

This is a job for sed :slight_smile:

sed -e 's/EncryptedPassword="[^"]*"/EncryptedPassword=""/'
3

works !! thank you

4

Or with a back-reference; for example if you allow spaces around the = it will keep them.

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" * :

perl -pe 's/(EncryptedPassword *= *)".*?"/$1""/'