look(1) [centos man page]

LOOK(1) 							   User Commands							   LOOK(1)

NAME

       look - display lines beginning with a given string

SYNOPSIS

       look [options] string [file]

DESCRIPTION

       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 characters are compared  and  the  case  of	alphabetic
       characters is ignored.

OPTIONS

       -a, --alternative
	      Use the alternative dictionary file.

       -d, --alphanum
	      Use normal dictionary character set and order, i.e. only alphanumeric characters are compared.  (This is on by default if no file is
	      specified.)

       -f, --ignore-case
	      Ignore the case of alphabetic characters.  (This is on by default if no file is specified.)

       -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.

       -h, --help
	      Display help text and exit.

       -V, --version
	      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.

EXAMPLE

	      sort -d /etc/passwd -o /tmp/look.dict
	      look -t: root:foobar /tmp/look.dict

FILES

       /usr/share/dict/words
	   the dictionary

       /usr/share/dict/web2
	   the alternative dictionary

SEE ALSO

       grep(1), sort(1)

COMPATIBILITY

       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.

HISTORY

       The look utility appeared in Version 7 AT&T Unix.

AVAILABILITY

       The look command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

util-linux							     June 2011								   LOOK(1)

Check Out this Related Man Page

COLCRT(1)							   User Commands							 COLCRT(1)

NAME

       colcrt - filter nroff output for CRT previewing

SYNOPSIS

       colcrt [options] [file ...]

DESCRIPTION

       colcrt  provides  virtual  half-line  and  reverse  line feed sequences for terminals without such capability, and on which overstriking is
       destructive.  Half-line characters and underlining (changed to dashing `-') are placed on new lines in between the normal output lines.

OPTIONS

       -, --no-underlining
	      Suppress all underlining.  This option is especially useful for previewing allboxed tables from tbl(1).

       -2, --half-lines
	      Causes all half-lines to be printed, effectively double spacing the output.  Normally, a minimal space output format is  used  which
	      will  suppress empty lines.  The program never suppresses two consecutive empty lines, however.  The -2 option is useful for sending
	      output to the line printer when the output contains superscripts and subscripts which would otherwise be invisible.

       -V, --version
	      Output version information and exit.

       -h, --help
	      Output help and exit.

EXAMPLES

       A typical use of colcrt would be

       tbl exum2.n | nroff -ms | colcrt - | more

SEE ALSO

       nroff(1), troff(1), col(1), more(1), ul(1)

BUGS

       Should fold underlines onto blanks even with the '-' option so that a true underline character would show.

       Can't back up more than 102 lines.

       General overstriking is lost; as a special case '|' overstruck with '-' or underline becomes '+'.

       Lines are trimmed to 132 characters.

       Some provision should be made for processing superscripts and subscripts in documents which are already double-spaced.

HISTORY

       The colcrt command appeared in 3.0BSD.

AVAILABILITY

       The colcrt command is part of the util-linux package and is available from Linux Kernel Archive <ftp://ftp.kernel.org/pub/linux/utils/util-
       linux/>.

util-linux							  September 2011							 COLCRT(1)

Linux and UNIX Man Pages

look(1) [centos man page]

Check Out this Related Man Page