Manual: rust-expr

EXPR(1)						   General Commands Manual					     EXPR(1)

NAME
       expr - Print the value of EXPRESSION to standard output

SYNOPSIS
       expr [--version] [--help] [expression]

DESCRIPTION
       Print the value of EXPRESSION to standard output

OPTIONS
       --version
	      output version information and exit

       --help display this help and exit

       [expression]

EXTRA
       Print the value of EXPRESSION to standard output. A blank line below separates increasing precedence groups.

       EXPRESSION may be:

       - ARG1 | ARG2: ARG1 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 <= ARG2: ARG1 is less than or equal to ARG2 - ARG1 = ARG2:
       ARG1 is equal to ARG2 - ARG1 != ARG2: ARG1 is unequal to ARG2 - ARG1 >= ARG2: ARG1 is greater than or equal to ARG2 -
       ARG1 > ARG2: ARG1 is greater than ARG2 - ARG1 + ARG2: arithmetic sum of ARG1 and ARG2 - ARG1 - ARG2: arithmetic	dif‐
       ference	of  ARG1  and  ARG2 - ARG1 * ARG2: arithmetic product of ARG1 and ARG2 - ARG1 / ARG2: arithmetic quotient of
       ARG1 divided by ARG2 - ARG1 % ARG2: arithmetic remainder of ARG1 divided by ARG2 - STRING : REGEXP: anchored  pattern
       match  of  REGEXP  in  STRING - match STRING REGEXP: same as STRING : REGEXP - substr STRING POS LENGTH: substring of
       STRING, POS counted from 1 - index STRING CHARS: index in STRING where any CHARS is found,  or  0  -  length  STRING:
       length of STRING - + TOKEN: interpret TOKEN as a string, even if it is a keyword like match
	 or an operator like / - ( EXPRESSION ): value of EXPRESSION

       Beware that many operators need to be escaped or quoted for shells.  Comparisons are arithmetic if both ARGs are num‐
       bers,  else  lexicographical.   Pattern matches return the string matched between \( and \) or null; if \( and \) are
       not used, they return the number of characters matched or 0.

       Exit status is 0 if EXPRESSION is neither null nor 0, 1 if EXPRESSION is null or 0, 2 if EXPRESSION is  syntactically
       invalid, and 3 if an error occurred.

       Environment variables:

       - EXPR_DEBUG_TOKENS=1: dump expression's tokens - EXPR_DEBUG_RPN=1: dump expression represented in reverse polish no‐
       tation - EXPR_DEBUG_SYA_STEP=1: dump each parser step - EXPR_DEBUG_AST=1: dump expression represented abstract syntax
       tree

VERSION
       v(uutils coreutils) 0.8.0

							 2026-04-16						     EXPR(1)