in bash when i try to check for null or empty using if statement get syntax error

Question

In bash when I try to check for null or empty i get syntax error message

DEFAULT_VALUE="0"
CRAM_QUERY=$(mycommand) 

if [[ "$CRAM_QUERY" == "NULL" ] || ["$CRAM_QUERY" == ""]] ; then 
   CRAM_QUERY="$DEFAULT_VALUE"
fi

Add a shebang and then paste your script there: http://www.shellcheck.net/ — Cyrus, Jul 24 '20 at 01:09
Does this answer your question? [How to represent multiple conditions in a shell if statement?](https://stackoverflow.com/questions/3826425/how-to-represent-multiple-conditions-in-a-shell-if-statement) — Digvijay S, Jul 24 '20 at 10:47

score 0 · Answer 1 · answered Jul 24 '20 at 01:15

0

This should work:

DEFAULT_VALUE="0"
CRAM_QUERY=$(mycommand) 

if [[ "$CRAM_QUERY" == "NULL" || "$CRAM_QUERY" == "" ]] ; then 
   CRAM_QUERY="$DEFAULT_VALUE"
fi

answered Jul 24 '20 at 01:15

Dominik

1 Answers1