X num of lines before and after

9 More Discussions You Might Find Interesting

1. Hardware

About the max num of physical memory

Can anyone tell me what the max num of physical memery depends? It's the bit number of the data bus? How about the max number of the virtual memory?

2. Shell Programming and Scripting

Simple question on $VAR = num

Hello, I am a begginer on shell scripting and I need a simple advice. I have the following script. The output of DATE is gathered from Oracle and it will be 101115 (for todays date) Therefore the DAY will be sed-ed , and it contains 15 #!/bin/sh DATE=`${LIB}/dt_YYMMDD 0` DAY=`echo $DATE| sed...

3. Shell Programming and Scripting

Find a string in textfile, erase $num lines after that string

I have a textfile containing text similar to the following pattern: STRING1 UNIQUE_STRING1 STRING2 STRING3 STRING4 STRING5 STRING1 UNIQUE_STRING2 STRING2 STRING3 STRING4 STRING5 STRING1 UNIQUE_STRING3 STRING2 STRING3

4. UNIX for Advanced & Expert Users

Set Caps and Num lock from within X?

Hello, Not sure if this is the right place to post it but.. I have a requirement to set Caps lock and/or Num lock on and off via a Cron job. Now I have working scripts that do the job, but as soon as X starts up the jobs no longer run (well they appear to, but Caps lock and Num lock do not...

5. Shell Programming and Scripting

perl: Please explain this for me: $hexdigit = (0 .. 9, 'a' .. 'f')[$num & 15];

This is taken from perlop. I can't understand what's going on, please can someone explain this for me? $hexdigit = (0 .. 9, 'a' .. 'f'); to get a hexadecimal digit

6. Shell Programming and Scripting

Port num incrementing

Hello Guyz These days Iam doing pretty good scripting work that is all because of you fellas.Thank you so much. As it goes ,here comes my next problem.Iam trying to implement automatic port number incrementing. For ex: demo() { echo "Enter for default port: read port ...

7. Shell Programming and Scripting

tracking sequence num

I have files coming to an input directory every few mins...eg test_00012.txt test_00013.txt test_00014.txt I need to write a script to monitor these and if a file is missing from the sequence I need my script to spot this so I can alert someone... ie... if I got the following:...

8. Shell Programming and Scripting

how to convert char to num

how to convert char to num or visa versa i am a beginner how to do it can someone guide me please

9. UNIX for Dummies Questions & Answers

setting num lock on at boot up

Once I knew how to set up a unix file so that the num lock would automatically be on after booting up. How exactly is that done? Unix has final control on the setting of the num lock from off or on to on at the end of the boot up process. Any help will be appreciated, especially if detailed. Oh...

LEARN ABOUT LINUX

comm

COMM(1) 							   User Commands							   COMM(1)

NAME

       comm - compare two sorted files line by line

SYNOPSIS

       comm [OPTION]... FILE1 FILE2

DESCRIPTION

       Compare sorted files FILE1 and FILE2 line by line.

       With  no  options,  produce three-column output.  Column one contains lines unique to FILE1, column two contains lines unique to FILE2, and
       column three contains lines common to both files.

       -1     suppress column 1 (lines unique to FILE1)

       -2     suppress column 2 (lines unique to FILE2)

       -3     suppress column 3 (lines that appear in both files)

       --check-order
	      check that the input is correctly sorted, even if all input lines are pairable

       --nocheck-order
	      do not check that the input is correctly sorted

       --output-delimiter=STR
	      separate columns with STR

       --help display this help and exit

       --version
	      output version information and exit

       Note, comparisons honor the rules specified by `LC_COLLATE'.

EXAMPLES

       comm -12 file1 file2
	      Print only lines present in both file1 and file2.

       comm -3
	      file1 file2  Print lines in file1 not in file2, and vice versa.

AUTHOR

       Written by Richard M. Stallman and David MacKenzie.

REPORTING BUGS

       Report comm bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report comm translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2010 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       join(1), uniq(1)

       The full documentation for comm is maintained as a Texinfo manual.  If the info and comm programs are properly installed at your site,  the
       command

	      info coreutils 'comm invocation'

       should give you access to the complete manual.

GNU coreutils 8.5						   February 2011							   COMM(1)

UNIX for Dummies Questions & Answers