|Advanced Bash-Scripting Guide: An in-depth exploration of the art of shell scripting|
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Condition tests using the if/then construct may be nested. The net result is equivalent to using the && compound comparison operator above.
1 if [ condition1 ] 2 then 3 if [ condition2 ] 4 then 5 do-something # But only if both "condition1" and "condition2" valid. 6 fi 7 fi
See Example 34-4 for an example of nested if/then condition tests.