EXPR(1) User Commands EXPR(1)NAME
expr - evaluate expressions
SYNOPSIS
expr EXPRESSION
expr OPTION
DESCRIPTION --help display this help and exit
--version
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 lexicograph-
ical. 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.
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report expr translation bugs to <http://translationproject.org/team/>
AUTHOR
Written by Mike Parker, James Youngman, and Paul Eggert.
COPYRIGHT
Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://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.
SEE ALSO
The full documentation for expr is maintained as a Texinfo manual. If the info and expr programs are properly installed at your site, the
command
info coreutils 'expr invocation'
should give you access to the complete manual.
GNU coreutils 8.22 June 2014 EXPR(1)
Check Out this Related Man Page
bcfg2-reports(8) System Manager's Manual bcfg2-reports(8)NAME
bcfg2-reports - Query reporting system for client status
SYNOPSIS
bcfg2-reports [-v]
DESCRIPTION
bcfg2-reports allows you to retrieve data from the database about clients, and the states of their current interactions. It also allows you
to change the expired/unexpired states. The utility runs as a standalone application. It does, however, use the models from
/src/lib/Server/Reports/reports/models.py.
OPTIONS -a
Shows all hosts, including expired hosts.
-b NAME
Single-host mode - shows bad entries from the current interaction of NAME. NAME is the name of the entry.
-c
Shows only clean hosts.
-d
Shows only dirty hosts.
-e NAME
Single host mode - shows extra entries from the current interaction of NAME. NAME is the name of the entry.
-h
Shows help and usage info about bcfg2-reports.
-m NAME
Single-host mode - shows modified entries from the current interaction of NAME. NAME is the name of the entry.
-s NAME
Single host mode - shows bad, modified, and extra entries from the current interaction of NAME. NAME is the name of the entry.
-x NAME
Toggles expired/unexpired state of NAME. NAME is the name of the entry.
--badentry=KIND,NAME
Shows only hosts whose current interaction has bad entries in of KIND kind and NAME name; if a single argument ARG1 is given, then
KIND,NAME pairs will be read from a file of name ARG1. KIND is the type of entry (Package, Path, Service, etc). NAME is the name of
the entry.
--extraentry=KIND,NAME
Shows only hosts whose current interaction has extra entries in of KIND kind and NAME name; if a single argument ARG1 is given, then
KIND,NAME pairs will be read from a file of name ARG1. KIND is the type of entry (Package, Path, Service, etc). NAME is the name of
the entry.
--fields=ARG1,ARG2,...
Only displays the fields ARG1,ARG2,... (name, time, state, total, good, bad)
--modifiedentry=KIND,NAME
Shows only hosts whose current interaction has modified entries in of KIND kind and NAME name; if a single argument ARG1 is given,
then KIND,NAME pairs will be read from a file of name ARG1. KIND is the type of entry (Package, Path, Service, etc). NAME is the
name of the entry.
--sort=ARG1,ARG2,...
Sorts output on ARG1,ARG2,... (name, time, state, total, good, bad)
--stale
Shows hosts which haven't run in the last 24 hours
SEE ALSO bcfg2(1), bcfg2-server(8)BUGS
None currently known
bcfg2-reports(8)