DragonFly On-Line Manual Pages

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LOOK(1) DragonFly General Commands Manual LOOK(1)
NAME
 look -- display lines beginning with a given string
SYNOPSIS
 look [-df] [-t termchar] string [file ...]
DESCRIPTION
 The look utility displays any lines in file which contain string as a
 prefix. As look 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.
 The following options are available:
 -d, --alphanum
 Dictionary character set and order, i.e., only alphanumeric
 characters are compared.
 -f, --ignore-case
 Ignore the case of alphabetic characters.
 -t, --terminate termchar
 Specify a string termination character, i.e., only the characters
 in string up to and including the first occurrence of termchar
 are compared.
ENVIRONMENT
 The LANG, LC_ALL and LC_CTYPE environment variables affect the execution
 of the look utility. Their effect is described in environ(7).
FILES
 /usr/share/dict/words the dictionary
EXIT STATUS
 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.
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.
 The -a and --alternative flags are ignored for compatibility.
SEE ALSO
 grep(1), sort(1)
HISTORY
 A look utility appeared in Version 7 AT&T UNIX.
BUGS
 Lines are not compared according to the current locale's collating order.
 Input files must be sorted with LC_COLLATE set to `C'.
DragonFly 4.3 January 12, 2016 DragonFly 4.3

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