29 lines
602 B
Groff
29 lines
602 B
Groff
.TH EXPR 1
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.SH NAME
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expr \- evaluate experession
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.SH SYNOPSIS
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\fBexpr \fIarg ...\fR
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.br
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.de FL
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.TP
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\\fB\\$1\\fR
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\\$2
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..
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.de EX
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.TP 20
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\\fB\\$1\\fR
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# \\$2
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..
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.SH EXAMPLES
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.EX "x=\`expr \$x + 1\`" "Add 1 to shell variable x"
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.SH DESCRIPTION
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.PP
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\fIExpr\fR computes the value of its argument and writes the result on
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standard output. The valid operators, in order of increasing precedence,
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are listed below. Operators grouped by {...} have the same precedence.
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The operators are: |, &, {<, <=, ==, !=, >=, >}, {+, \-}, *, /, %, and :.
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Parentheses are permitted.
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.SH "SEE ALSO"
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.BR sh (1),
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.BR test (1).
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