Ajout des fichiers

2024-11-14 10:45:33 +01:00
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+EXPR(1)                          User Commands                         EXPR(1)
+
+NNAAMMEE
+       expr - evaluate expressions
+
+SSYYNNOOPPSSIISS
+       eexxpprr _E_X_P_R_E_S_S_I_O_N
+       eexxpprr _O_P_T_I_O_N
+
+DDEESSCCRRIIPPTTIIOONN
+       ----hheellpp display this help and exit
+
+       ----vveerrssiioonn
+              output version information and exit
+
+       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 difference 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 numbers, else lexicographi-
+       cal.  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.
+
+AAUUTTHHOORR
+       Written by Mike Parker, James Youngman, and Paul Eggert.
+
+RREEPPOORRTTIINNGG BBUUGGSS
+       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
+       Report expr translation bugs to <https://translationproject.org/team/>
+
+CCOOPPYYRRIIGGHHTT
+       Copyright (C) 2017 Free Software Foundation, Inc.  License GPLv3+:  GNU
+       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
+       This  is  free  software:  you  are free to change and redistribute it.
+       There is NO WARRANTY, to the extent permitted by law.
+
+SSEEEE AALLSSOO
+       Full documentation at: <https://www.gnu.org/software/coreutils/expr>
+       or available locally via: info '(coreutils) expr invocation'
+
+GNU coreutils 8.29               December 2017                         EXPR(1)