LOOK
Section: User Commands (1)
Index
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BSD mandoc
NAME
look
- display lines beginning with a given string
SYNOPSIS
[-df
]
[-t termchar
]
string
[file
]
DESCRIPTION
The
utility displays any lines in
file
which contain
string
as a prefix.
As
performs a binary search, the lines in
file
must be sorted.
If
file
is not specified, the file
/usr/share/dict/words
is used, only alphanumeric characters are compared and the case of
alphabetic characters is ignored.
Options:
- -d
-
Dictionary character set and order, i.e. only alphanumeric characters
are compared.
- -f
-
Ignore the case of alphabetic characters.
- -t
-
Specify a string termination character, i.e. only the characters
in
string
up to and including the first occurrence of
termchar
are compared.
The
utility exits 0 if one or more lines were found and displayed,
1 if no lines were found, and >1 if an error occurred.
FILES
- /usr/share/dict/words
-
the dictionary
SEE ALSO
grep(1),
sort(1)
COMPATIBILITY
The original manual page stated that tabs and blank characters participated
in comparisons when the
-d
option was specified.
This was incorrect and the current man page matches the historic
implementation.
HISTORY
appeared in
AT&T System
v7 .
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- FILES
-
- SEE ALSO
-
- COMPATIBILITY
-
- HISTORY
-
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Time: 04:29:54 GMT, April 24, 2025