Replace a string with special characters using sed

Question

I have the below string

sec.val.hos.patn=.*app\.com$|localhost$|127\.0\.0\.1$

I want replace .*app\.com$|localhost$|127\.0\.0\.1$ with * so that final string looks like below

sec.val.hos.patn=*

I am trying to solve this problem using below sed command on Mac OS

sed -i ' ' 's~\.\*app\\\.com\$\|localhost\$\|127\\\.0\\\.0\\\.1\$~\*~g' file.txt

but unable to get the desired replacement. Can someone please help me to get this working.

can u please paste the content of the output file and the command u ran on your mac — bbajagain, Jul 28 '22 at 20:14
It is same command that you have shown. Remove `-i ''` if you want to see output on terminal — anubhava, Jul 28 '22 at 20:23

score 0 · Answer 1 · answered Jul 28 '22 at 19:30

I don't know if the pattern is actually more complex than you sample, but seems this should do the trick:

sed 's/\(^.*=\).*$/\1*/' <<< "sec.val.hos.patn=.*app\.com$|localhost$|127\.0\.0\.1$"

Here we capture everything from the start to =, then we replace the whole thing with capture group 1 plus *.

1 Answers1