NAME
- look - find lines in a sorted list
SYNOPSIS
- look [ -dfnix ] [ -r endkey ] [ -tc ] [ string ] [ file ]
DESCRIPTION
-
Look
consults a sorted
file
and prints all lines that begin with
string.
It uses binary search.
The following options are recognised:
- -i
- Interactive.
There is no
string
argument; instead
look
takes lines from the standard input as strings to be looked up.
- -x
- Exact.
Print only lines of the file whose key matches
string
exactly.
- -d
- `Directory' order:
only letters, digits,
tabs and blanks participate in comparisons.
- -f
- Fold.
Upper case letters compare equal to lower case.
- -n
- Numeric comparison with initial string of digits, optional minus sign,
and optional decimal point.
- -r endkey
- Limit the range of matching values, to include
the word
endkey
but no larger values.
- -t[c]
- Character c terminates the sort key in the file. By default, tab terminates the key. If c is missing the entire line comprises the key.
If no file is specified, /lib/words is assumed, with collating sequence df.
FILES
- /lib/words
SOURCE
- /appl/cmd/look.b
SEE ALSO
- sort(1), grep(1)
DIAGNOSTICS
- The exit status is not found if no match is found, and no dictionary if file or the default dictionary cannot be opened.
| LOOK(1) | Rev: Tue Jan 29 13:11:31 GMT 2008 |