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Top Forums Shell Programming and Scripting To display the selected part in text file of unix Post 302626361 by neutronscott on Thursday 19th of April 2012 08:46:53 AM
Old 04-19-2012
Quote:
Originally Posted by rammm
awk reads the file line by line.ok. Does the 0 in $0 is refer to first line of the file ?
awk splits a text file into "records". by default this is a line (but can be changed).
each line (or record) is split into fields. by default this is done at spaces.

$0 then refers to the entire line at the moment. $1 is the first word, $2 the second, and so on, up to $NF (NF meaning number of fields)

The exit in the action block makes it quit before it ever gets to any other lines.
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JZIP(6) 						 John's Z-code Interpreter Program						   JZIP(6)

NAME
jzip - execute Infocom v1-5 and Inform v1-5 & v8 game files SYNOPSIS
jzip [ options ] z-file-name DESCRIPTION
jzip invokes the Z-code Interpreter. REQUIREMENTS
jzip will run under most (if not all) flavors of Unix, including AIX, Solaris, SunOS, HP/UX, Linux, Free/NetBSD, IRIX, NeXT Mach, DEC OSF/1, and others. EDITING
JZip now supports arrowkey editing in UNIX. Up/Down selects the previous / next command in history Left/Right moves the cursor over the line. Backspace deletes Typing inserts under the cursor OPTIONS
-l n lines in display -c n columns in display -r n text right margin (default = 1) -t n text top margin (default = 0) -v display version information -m monochrome mode -y set Tandy bit -s n zmachine strict level, from 0 (none), 1 (report once, recommended) to 3. ENVIRONMENT
jzip looks for the environment variable INFOCOM_PATH and will use the path found there to look for the story file specified on the command line if the story file cannot be found in the current directory. CREDITS
jzip is written and maintained by John Holder (j-holder@home.com), based on the ZIP v2.0 sources by Mark Howell and Olaf 'Olsen' Barthel. AVAILABILITY
The most recent version of jzip can be downloaded from one of: http://www.jzip.sourceforge.net/ ftp://ifarchive.org/infocom/interpreters/zip/ FILES
/usr/games/jzip The Z-Code Interpreter Program /usr/lib/games/zfiles Recommended location for Zcode files RELATED USENET NEWSGROUPS
Interactive Fiction (IF) authors should check out rec.arts.int-fiction, and IF players should check out rec.games.int-fiction. 2.1 JZIP(6)
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