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author | Cameron Katri <me@cameronkatri.com> | 2021-05-09 14:20:58 -0400 |
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committer | Cameron Katri <me@cameronkatri.com> | 2021-05-09 14:20:58 -0400 |
commit | 5fd83771641d15c418f747bd343ba6738d3875f7 (patch) | |
tree | 5abf0f78f680d9837dbd93d4d4c3933bb7509599 /text_cmds/look/look.1 | |
download | apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.gz apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.zst apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.zip |
Import macOS userland
adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106
Diffstat (limited to 'text_cmds/look/look.1')
-rw-r--r-- | text_cmds/look/look.1 | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/text_cmds/look/look.1 b/text_cmds/look/look.1 new file mode 100644 index 0000000..fb8bc85 --- /dev/null +++ b/text_cmds/look/look.1 @@ -0,0 +1,124 @@ +.\" Copyright (c) 1990, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)look.1 8.1 (Berkeley) 6/14/93 +.\" $FreeBSD: src/usr.bin/look/look.1,v 1.17 2005/01/17 07:44:22 ru Exp $ +.\" +.Dd July 17, 2004 +.Dt LOOK 1 +.Os +.Sh NAME +.Nm look +.Nd display lines beginning with a given string +.Sh SYNOPSIS +.Nm +.Op Fl df +.Op Fl t Ar termchar +.Ar string +.Op Ar +.Sh DESCRIPTION +The +.Nm +utility displays any lines in +.Ar file +which contain +.Ar string +as a prefix. +As +.Nm +performs a binary search, the lines in +.Ar file +must be sorted. +.Pp +If +.Ar file +is not specified, the file +.Pa /usr/share/dict/words +is used, only alphanumeric characters are compared and the case of +alphabetic characters is ignored. +.Pp +The following options are available: +.Bl -tag -width indent +.It Fl d +Dictionary character set and order, i.e., only alphanumeric characters +are compared. +.It Fl f +Ignore the case of alphabetic characters. +.It Fl t +Specify a string termination character, i.e., only the characters +in +.Ar string +up to and including the first occurrence of +.Ar termchar +are compared. +.El +.Sh ENVIRONMENT +The +.Ev LANG , LC_ALL +and +.Ev LC_CTYPE +environment variables affect the execution of the +.Nm +utility. +Their effect is described in +.Xr environ 7 . +.Sh FILES +.Bl -tag -width /usr/share/dict/words -compact +.It Pa /usr/share/dict/words +the dictionary +.El +.Sh EXIT STATUS +The +.Nm +utility exits 0 if one or more lines were found and displayed, +1 if no lines were found, and >1 if an error occurred. +.Sh COMPATIBILITY +The original manual page stated that tabs and blank characters participated +in comparisons when the +.Fl d +option was specified. +This was incorrect and the current man page matches the historic +implementation. +.Sh SEE ALSO +.Xr grep 1 , +.Xr sort 1 +.Sh HISTORY +A +.Nm +utility appeared in +.At v7 . +.Sh BUGS +Lines are not compared according to the current locale's collating +order. +Input files must be sorted with +.Ev LC_COLLATE +set to +.Ql C . |