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test ? check file types and compare values |
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test EXPRESSION |
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Exit with the status determined by EXPRESSION. |
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??help |
display this help and exit |
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??version |
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output version information and exit |
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EXPRESSION is true or false and sets exit status. It is one of: |
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( EXPRESSION ) |
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EXPRESSION is true |
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! EXPRESSION |
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EXPRESSION is false |
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EXPRESSION1 ?a EXPRESSION2 |
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both EXPRESSION1 and EXPRESSION2 are true |
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EXPRESSION1 ?o EXPRESSION2 |
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either EXPRESSION1 or EXPRESSION2 is true |
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[-n] STRING |
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the length of STRING is nonzero |
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?z STRING |
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the length of STRING is zero |
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STRING1 = STRING2 |
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the strings are equal |
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STRING1 != STRING2 |
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the strings are not equal |
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INTEGER1 ?eq INTEGER2 |
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INTEGER1 is equal to INTEGER2 |
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INTEGER1 ?ge INTEGER2 |
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INTEGER1 is greater than or equal to INTEGER2 |
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INTEGER1 ?gt INTEGER2 |
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INTEGER1 is greater than INTEGER2 |
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INTEGER1 ?le INTEGER2 |
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INTEGER1 is less than or equal to INTEGER2 |
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INTEGER1 ?lt INTEGER2 |
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INTEGER1 is less than INTEGER2 |
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INTEGER1 ?ne INTEGER2 |
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INTEGER1 is not equal to INTEGER2 |
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FILE1 ?ef FILE2 |
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FILE1 and FILE2 have the same device and inode numbers |
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FILE1 ?nt FILE2 |
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FILE1 is newer (modification date) than FILE2 |
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FILE1 ?ot FILE2 |
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FILE1 is older than FILE2 |
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?b FILE |
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FILE exists and is block special |
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?c FILE |
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FILE exists and is character special |
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?d FILE |
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FILE exists and is a directory |
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?e FILE |
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FILE exists |
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?f FILE |
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FILE exists and is a regular file |
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?g FILE |
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FILE exists and is set-group-ID |
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?G FILE |
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FILE exists and is owned by the effective group ID |
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?k FILE |
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FILE exists and has its sticky bit set |
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?L FILE |
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FILE exists and is a symbolic link |
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?O FILE |
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FILE exists and is owned by the effective user ID |
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?p FILE |
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FILE exists and is a named pipe |
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?r FILE |
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FILE exists and is readable |
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?s FILE |
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FILE exists and has a size greater than zero |
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?S FILE |
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FILE exists and is a socket |
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?t [FD] |
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file descriptor FD (stdout by default) is opened on a terminal |
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?u FILE |
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FILE exists and its set-user-ID bit is set |
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?w FILE |
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FILE exists and is writable |
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?x FILE |
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FILE exists and is executable |
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Beware that parentheses need to be escaped (e.g., by backslashes) for shells. INTEGER may also be ?l STRING, which evaluates to the length of STRING. |
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Report bugs to <bug-sh-utils@gnu.org>. |
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The full documentation for test is maintained as a Texinfo manual. If the info and test programs are properly installed at your site, the command |
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info test |
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should give you access to the complete manual. |
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Copyright © 1999 Free Software Foundation, Inc. |
