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EXPR
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EXPR

Owned by Aliaksei Shautsou (Deactivated)
Last updated: May 04, 2018 by Youlia Ushakova (Deactivated)

Command-line utility to evaluate regular expressions. EXPR can be used in Action-Command attributes and Trigger-Command attributes. EXPR uses a set of arithmetical and Boolean operators to perform simple evaluations between two arguments. EXPR is also used to set the integer value.

ARG1 | ARG2ARG1 if it is neither null nor 0, otherwise ARG2 ARG1 & ARG2 ARG1 if neither argument is null or 0, otherwise 0 ARG1 < ARG2 ARG1 is less than ARG2
ARG1 <= ARG2ARG1 is less than or equal to ARG2
ARG1 = ARG2 ARG1 is equal to ARG2
ARG1 != ARG2ARG1 is unequal to ARG2
ARG1 >= ARG2ARG1 is greater than or equal to ARG2
ARG1 > ARG2ARG1 is greater than ARG2
ARG1 + ARG2Arithmetic sum of ARG1 and ARG2 ARG1 - ARG2 arithmetic difference of ARG1 and ARG2 ARG1 * ARG2 arithmetic product of ARG1 and ARG2
ARG1 / ARG2Arithmetic quotient of ARG1 divided by ARG2
ARG1 % ARG2Arithmetic remainder of ARG1 divided by ARG2


Example

# Add 1 to the variable $counter

expr: $counter = $counter + 1

# Compute the remainder of the variable $counter divided by 2

expr: $remainder = $counter % 2

# Assign the integer value to the variable $name

expr: $name = 6

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