linux force command exit status as true

This saved me once when I had a script that was failing because wget returned a non-zero exit code on a timeout, stopping the whole pipeline. Appending || true forces the exit status to 0 regardless. Use it carefully — you’re telling the shell ‘it’s fine even if it failed’ — so make sure you actually mean that.

• Linux command exit status

Using echo $? to get last executed command exit status

$ wget https://www.google.com

$ echo $?
0

• Call a host that does not exists

$ wget http://www.dummybla.com/

--2020-09-23 19:00:55--  http://www.dummybla.com/
Resolving www.dummybla.com (www.dummybla.com)... failed: nodename nor servname provided, or not known.
wget: unable to resolve host address ‘www.dummybla.com’

$ echo $?
4

• Call a host that does not exists and force wget exit status as true

$ wget http://www.dummybla.com/ || true

--2020-09-23 19:00:55--  http://www.dummybla.com/
Resolving www.dummybla.com (www.dummybla.com)... failed: nodename nor servname provided, or not known.
wget: unable to resolve host address ‘www.dummybla.com’

$ echo $?
0