Frequently Asked Questions About Linux / UNIX » input file

awk / cut: Skip First Two Fields and Print the Rest of Line

Vivek Gite — Wed, 13 Jul 2011 07:51:13 +0000

I'd like to skip first two or three fields at the the beginning of a line and print the rest of line. Consider the following input:

This is a test Giving back more than we take

I want my input file with the following output:

a test more than we take

How do I printing lines from the nth field using awk under UNIX or Linux operating systems?

Bash Shell: Extract Digits From a String

Vivek Gite — Wed, 16 Feb 2011 10:56:41 +0000

How do I extract digits only from a given string under Bash shell?

Linux / UNIX: mplayer Play mp3s From a Playlist File

Vivek Gite — Sun, 19 Dec 2010 08:21:54 +0000

I'm an extreme newbie to the Linux world, but any time I try to get play files according to a playlist file using mplayer command line it turns up this error:

$ mplayer playlist.m3u MPlayer SVN-r1.0~rc3+svn20090426-4.4.3 (C) 2000-2009 MPlayer Team mplayer: could not connect to socket mplayer: No such file or directory Failed to open LIRC support. You will not be able to use your remote control. Playing playlist.m3u. Cache fill: 0.00% (44 bytes) Exiting... (End of file)

How do I fix this and play music without using GUI tools?

Grep From Files and Display the File Name

Vivek Gite — Mon, 13 Sep 2010 19:11:34 +0000

How do I grep from a number of files and display the file name only?

Bash Shell: Convert Tabs To Spaces In a File

Vivek Gite — Fri, 05 Mar 2010 11:43:11 +0000

How do convert tabs to spaces in a file using a bash shell?

Grep Count Lines If a String / Word Matches

Vivek Gite — Thu, 18 Feb 2010 17:51:01 +0000

How do I count lines if given word or string matches for each input file under Linux or UNIX operating systems?

Linux / UNIX Shell: Sort Date

Vivek Gite — Thu, 23 Oct 2008 17:48:01 +0000

Q. How do I sort date type of data stored in a text file which is in following sample format:

Code         Date          TIME
HOS05	23/12/2008	10AM
HOS06	15/12/2008	2PM
HOS62	29/12/2008	10AM
HOS64	23/12/2008	2PM
HOS70	26/12/2008	10AM
ZFT01	06/12/2008	10AM
HOS73	11/12/2008	2PM
MHOS051	05/12/2008	10AM
MHOS041	20/12/2008	2PM
MHOS042	27/12/2008	2PM
MHOS053	11/12/2008	10AM
MHOS043	30/12/2008	2PM

How do I sort data date and time wise?

Bash Shell: Replace a String With Another String In All Files Using sed and Perl -pie Options

Vivek Gite — Tue, 27 Nov 2007 18:32:24 +0000

How do I replace a string with another string in all files? For example, ~/foo directory has 100s of text file and I'd like to find out xyz string and replace with abc. I'd like to use sed or any other tool to replace all occurrence of the word.