GNU Info

(sh-utils.info)test invocation

---

Next: expr invocation Prev: true invocation Up: Conditions

---

Enter node , (file) or (file)node

`test': Check file types and compare values
===========================================

   `test' returns a status of 0 (true) or 1 (false) depending on the
evaluation of the conditional expression EXPR.  Each part of the
expression must be a separate argument.

   `test' has file status checks, string operators, and numeric
comparison operators.

   Because most shells have a built-in command by the same name, using
the unadorned command name in a script or interactively may get you
different functionality than that described here.

   Besides the options below, `test' accepts a lone `--help' or
`--version'.  Note: Common options.  A single non-option argument is
also allowed: `test' returns true if the argument is not null.

File type tests

-[bcdfhLpSt]

Access permission tests

-[gkruwxOG]

File characteristics tests

-e -s -nt -ot -ef

String tests

-z -n = !=

Numeric tests

-eq -ne -lt -le -gt -ge

Connectives for test

! -a -o