60 lines
1.6 KiB
Groff
60 lines
1.6 KiB
Groff
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TEST(1) Minix Programmer's Manual TEST(1)
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NAME
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test, [ - test for a condition
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SYNOPSIS
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test expr
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[ expr ]
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OPTIONS
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(none)
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EXAMPLES
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test -r file # See if file is readable
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DESCRIPTION
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Test checks to see if files exist, are readable, etc. and returns an exit
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status of zero if true and nonzero if false. The legal operators are
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-r file true if the file is readable
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-w file true if the file is writable
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-x file true if the file is executable
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-f file true if the file is not a directory
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-d file true if the file is a directory
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-s file true if the file exists and has a size > 0
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-t fd true if file descriptor fd (default 1) is a terminal
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-z s true if the string s has zero length
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-n s true if the string s has nonzero length
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s1 = s2 true if the strings s1 and s2 are identical
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s1 != s2 true if the strings s1 and s2 are different
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m -eq m true if the integers m and n are numerically equal
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The operators -gt, -ge, -ne, -le, and -lt may be used as well. These
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operands may be combined with -a (Boolean and), -o (Boolean or), !
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(negation). The priority of -a is higher than that of -o. Parentheses are
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permitted, but must be escaped to keep the shell from trying to interpret
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them.
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SEE ALSO
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expr(1), sh(1).
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1
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