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| # -n operator: check if var is not empty | |
| VAR="test" | |
| if [ -n "$VAR" ]; then | |
| echo "$VAR is not empty" | |
| fi | |
| # -z operator: check if var is empty | |
| VAR="" | |
| if [ -z "$VAR" ]; then | |
| echo "$VAR is empty" | |
| fi |
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