sh-tute.html:
A brief summary of test operators
Here's a quick list of test operators. It's by no mean... zero length
1
-z
operand has zero length
1
-d
there exists a directory whose name is operand
1
-f
there exists a file whose name is operand
1
-eq
the ope... are often used to examine the status of a file. There are string operators and numeric comparison opera