|Linux & Unix Commands - Search Man Pages
LOOK(1) User Commands LOOK(1)
look - display lines beginning with a given string
look [options] string [file]
The look utility displays any lines in file which contain string. As look performs a
binary search, the lines in file must be sorted (where sort(1) got the same options -d
and/or -f that look is invoked with).
If file is not specified, the file /usr/share/dict/words is used, only alphanumeric char-
acters are compared and the case of alphabetic characters is ignored.
Use the alternative dictionary file.
Use normal dictionary character set and order, i.e. only alphanumeric characters
are compared. (This is on by default if no file is specified.)
Ignore the case of alphabetic characters. (This is on by default if no file is
-t, --terminate character
Specify a string termination character, i.e. only the characters in string up to
and including the first occurrence of character are compared.
Display help text and exit.
Output version information and exit.
The look utility exits 0 if one or more lines were found and displayed, 1 if no lines were
found, and >1 if an error occurred.
sort -d /etc/passwd -o /tmp/look.dict
look -t: root:foobar /tmp/look.dict
the alternative dictionary
The original manual page stated that tabs and blank characters participated in comparisons
when the alphanum option was specified. This was incorrect, and the current man page
matches the historic implementation.
The look utility appeared in Version 7 AT&T Unix.
The look command is part of the util-linux package and is available from ftp://ftp.ker-
util-linux June 2011 LOOK(1)
All times are GMT -4. The time now is 02:21 AM.