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Top Forums UNIX for Dummies Questions & Answers Convert Post 302913948 by RavinderSingh13 on Thursday 21st of August 2014 01:25:28 AM
Old 08-21-2014
Posted by Don:

Quote:
Quote:
Originally Posted by RavinderSingh13 Image
Hello lawsongeek,

One more approach not effective as Don's but may help.
Thanks Don for nice approach.


Code:
awk '{for(i=1;i<=NR;i++){a=a ORS $0;next}} END{gsub(/^[[:space:]]/,Y,a);gsub(/[[:space:]]/,",",a); print a}' filename


... ... ...

Thanks,
R. Singh

Hi RavinderSingh,
If you want to take this approach, wouldn't this be more efficient:

Code:
awk '{a=(a==""?"":a",")$0;next}} END{print a}' filename

I don't see the need for the for loop; did I miss something?

The reason I didn't use this approach is that the script I suggested before will produce the desired output successfully even if the total length of the output is longer than LINE_MAX bytes as long as no single input line is longer than LINE_MAX. The behavior with this script is again unspecified if the length of the string stored in a is (LINE_MAX -1) or more bytes (which will happen whenever the size of the input file is LINE_MAX or more bytes).
Thank you Don for really nice solution, but seems there is an extra } character, so removed the same now.

Code:
awk '{a=(a==""?"":a",")$0;next} END{print a}' filename


Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
 

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FIREFOX(1)							Linux User's Manual							FIREFOX(1)

NAME
firefox - a Web browser for X11 derived from the Mozilla browser SYNOPSIS
firefox [OPTIONS] [URL] DESCRIPTION
Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability. USAGE
firefox is a simple shell script that will set up the environment for the actual executable. OPTIONS
A summary of the options supported by firefox is included below. GTK options --gdk-debug=FLAGS Gdk debugging flags to set --gdk-no-debug=FLAGS Gdk debugging flags to unset --gtk-debug=FLAGS Gtk+ debugging flags to set --gtk-no-debug=FLAGS Gtk+ debugging flags to unset --gtk-module=MODULE Load an additional Gtk module X11 options --display=DISPLAY X display to use --sync Make X calls synchronous --no-xshm Don't use X shared memory extension --xim-preedit=STYLE --xim-status=STYLE --g-fatal-warnings Make all warnings fatal Firefox options -h, -help Show summary of options. -height value Set height of startup window to value. -width value Set width of startup window to value. -v, -version Print /usr/bin/firefox-bin version. -CreateProfile profile Create profile. -P profile Start with profile. -ProfileManager Start with profile manager. -UILocale lang-region Start with lang-region resources. -contentLocale lang-region Start with lang-region resources. -remote command Execute command in an already running Firefox process. For more info, see: http://www.mozilla.org/unix/remote.html -no-remote Don't try to control an already running instance. -jsconsole Start with Javascript Console -chrome url Load the specified chrome. -new-window url Open URL in a new window if Firefox is already running. -new-tab url Open URL in a new tab if Firefox is already running. -preferences Open Firefox preferences menu. -safe-mode Disables extensions and themes for this session. FILES /usr/bin/firefox - shell script wrapping firefox /usr/lib/firefox/firefox - firefox executable VERSION
3.0 BUGS
To report a bug, please visit http://bugzilla.mozilla.org/ SEE ALSO
mozilla(1) AUTHORS
The Mozilla Organization http://www.mozilla.org/about.html firefox January 04, 2006 FIREFOX(1)
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