I would like to know whether it is possible to have more than two statements in an if
statement when you are writing a shell script?
username1="BOSS1"
username2="BOSS2"
password1="1234"
password2="4321"
if(($username == $username1)) && (($password == password1)) ||
(($username == $username2)) && (($password == password2)) ; then
This does NOT work. But is there a way to make it work?
Thanks!
This question is related to
shell
if-statement
conditional
account
You are trying to compare strings inside an arithmetic command (((...))
). Use [[
instead.
if [[ $username == "$username1" && $password == "$password1" ]] ||
[[ $username == "$username2" && $password == "$password2" ]]; then
Note that I've reduced this to two separate tests joined by ||
, with the &&
moved inside the tests. This is because the shell operators &&
and ||
have equal precedence and are simply evaluated from left to right. As a result, it's not generally true that a && b || c && d
is equivalent to the intended ( a && b ) || ( c && d )
.
if using /bin/sh
you can use:
if [ <condition> ] && [ <condition> ]; then
...
fi
if using /bin/bash
you can use:
if [[ <condition> && <condition> ]]; then
...
fi
Source: Stackoverflow.com