compare to conditons in while statement
 

this could be simple but yet i need help as different combination of comapring two conditons with while and if didnt work for me in shell

say i need to compare

$hash == '------' or $ hash = 0

how can i do it with IF and WHILE in bash...

eg
if [$hash = '-----' ] or [$hash= 0]
then
..............
else
..................

fi


while [$hash='-------' ] or [$hash = 0 ]
do
...................
done

thanks

The logical OR in bash is -o, whereas the logical AND is -a. Also do not confuse arithmetic operators with string operators: EQUAL will be = for string comparison, it will be -eq for integer comparison. See section 7.3 of the Advanced Bash Scripting Guide for details.