Sponsored Content
Top Forums Shell Programming and Scripting How to read from specific line number in shell script? Post 302587228 by ctsgnb on Wednesday 4th of January 2012 09:25:07 AM
Old 01-04-2012
Tedious way : manual splitting every 10000 lines:
Code:
awk 'BEGIN{c=0}{f=FILENAME"."c}NR%10000==0{print $0 > f;close(f);c++;next}{print $0 > f }' yourfile

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Shell Script to read specific lines in a file

I have a file with contents as follows Record 1: Rejected - Error on table "DWO"."P2G_CUST_EVENTS". ORA-00001: unique constraint (DWO.CUST_EVENTS_PK) violated Record 5: Rejected - Error on table "DWO"."P2G_CUST_EVENTS". ORA-00001: unique constraint (DWO.CUST_EVENTS_PK) violated Record 6:... (5 Replies)
Discussion started by: varshanswamy
5 Replies

2. Shell Programming and Scripting

Adding a columnfrom a specifit line number to a specific line number

Hi, I have a huge file & I want to add a specific text in column. But I want to add this text from a specific line number to a specific line number & another text in to another range of line numbers. To be more specific: lets say my file has 1000 lines & 4 Columns. I want to add text "Hello"... (2 Replies)
Discussion started by: Ezy
2 Replies

3. Shell Programming and Scripting

A script that read specific fileds from the 7th line in a file

Dear All, I need a unix script that will read the 7th line and especially these fileds from a file Mo speed 16, Mt speed 15 every 15 minutes starting from 00:00 to 23:45 on daily basis and put the result in a txt file and name it MT_MO_20090225.txt, please also note that the system date format... (2 Replies)
Discussion started by: samura
2 Replies

4. UNIX for Dummies Questions & Answers

How to read contents of a file from a given line number upto line number again specified by user

Hello Everyone. I am trying to display contains of a file from a specific line to a specific line(let say, from line number 3 to line number 5). For this I got the shell script as shown below: if ; then if ; then tail +$1 $3 | head -n $2 else ... (5 Replies)
Discussion started by: grc
5 Replies

5. Shell Programming and Scripting

How to read specific line of text from a Script and send email notification

Hi ! I am a newbie and never officially wrote a shell script before. The requirement for this script is : 1) Read a file called 'bpm.log' and identify if it has a specific text such as 'this is the text'. Its a static value and that is the only text we need to read. 2) If that... (2 Replies)
Discussion started by: atechcorp
2 Replies

6. Shell Programming and Scripting

Using awk to read a specific line and a specific field on that line.

Say the input was as follows: Brat 20 x 1000 32rf Pour 15 p 1621 05pr Dart 10 z 1111 22xx My program prompts for an input, what I want is to use the input to locate a specific field. Like if I type in, "Pou" then it would return "Pour" and just "Pour" I currently have this line but it is... (6 Replies)
Discussion started by: Bungkai
6 Replies

7. Shell Programming and Scripting

Shell script to read a text file line by line & process it...

Hi , I am trying to write an shell, which reads a text file (from a location) having a list of numbers of strictly 5 digits only ex: 33144 Now my script will check : 1) that each entry is only 5 digits & numeric only, no alphabets, & its not empty. 2)then it executes a shell script called... (8 Replies)
Discussion started by: new_to_shell
8 Replies

8. Shell Programming and Scripting

Shell script to read multiple options from file, line by line

Hi all I have spent half a day trying to create a shell script which reads a configuration file on a line by line basis. The idea of the file is that each will contain server information, such as IP address and various port numbers. The line could also be blank (The file is user created). Here... (1 Reply)
Discussion started by: haggismn
1 Replies

9. Shell Programming and Scripting

How to change a number on a specific line with cshell or shell?

Hello all, I need to change a number in a file by adding some residuals respectively To make it clear, I need to add 0.11 to the number between 24-28 (which is below the SECON) for all the lines starting with FRR1 or I need to add 0.13 to the number between 24-28 (which is below the... (9 Replies)
Discussion started by: miriammiriam
9 Replies

10. Shell Programming and Scripting

Shell script UNIX to read text file line by line

i have a text file as belows, it includes 2 columns, 1st is the column name, 2nd is the file_name data_file.txt column_name file_name col1 file1 col2 file2 col3 file1 col4 file1 col5 file2 now, i would like to... (4 Replies)
Discussion started by: tester111
4 Replies
SYSLOGOUT(8)						      System Manager's Manual						      SYSLOGOUT(8)

NAME
syslogout - modular centralized shell logout mechanism DESCRIPTION
syslogout is a generic approach to enable centralized shell logout actions for all users of a given system in a modular and centralized way mostly aimed at avoiding work for lazy sysadmins. It has only been tested to work with the bash shell. It basically consists of the small /etc/syslogout shell script which invokes other small shell scripts having a .bash suffix which are con- tained in the /etc/syslogout.d/ directory. The system administrator can drop in any script he wants without any naming convention other than that the scripts need to have a .bash suffix to enable automagic sourcing by the /etc/syslogout script. For shell sessions, the contents of /etc/syslogout.d/" will be sourced by every user at logout if the following lines are present in his $HOME/.bash_logout: if [ -f /etc/syslogout ]; then . /etc/syslogout fi If used for X sessions it is advisable to include the former statement into the Xreset script of the X display manager instead to prevent that closing of an terminal emulator window yields unexpected results in your running X session if your X11 terminal emulator is using a login shell. Be sure then to run it under the user-id of the X session's user. See the example files in /usr/share/doc/syslogout/ for illustration. Users not wanting /etc/syslogout to be sourced for their environment can easily disable it's automatic mechanism. It can be disabled by simply creating an empty file called $HOME/.nosyslogout in the user's home directory using e.g. the touch(1) command. Any single configuration file in /etc/syslogout.d/ can simply be overridden by any user by creating a private $HOME/.syslogout.d/ directory which may contain a user's own version of any configuration file to be sourced instead of the system default. It's names have just to match exactly the system's default /etc/syslogout.d/ configuration files. Empty versions of these files contained in the $HOME/.syslo- gout.d/ directory automatically disable sourcing of the system wide version. Naturally, users can add and include their own private scripts to be automagically executed by /etc/syslogout at logout time. OPTIONS
There are no options other than those dictated by shell conventions. Anything is defined within the configuration scripts themselves. SEE ALSO
The README files and configuration examples contained in /usr/share/doc/syslogout/ and the manual page for bash(1), xdm(1x), xdm.options(5), and wdm(1x). Recommended further reading is everything related with shell programming. If you need a similar mechanism for executing code at login time check out the related package sysprofile(8) which is a very close compan- ion to syslogout. BUGS
syslogout in its current form is mainly restricted to bash(1) syntax. In fact it is actually a rather embarrassing quick and dirty hack than anything else - but it works. It serves the practical need to enable a centralized bash configuration until something better becomes available. Your constructive criticism in making this into something better" is very welcome. Before i forget to mention it: we take patches... ;-) AUTHOR
syslogout was developed by Paul Seelig <pseelig@debian.org> specifically for the Debian GNU/Linux system. Feel free to port it to and use it anywhere else under the conditions of either the GNU public license or the BSD license or both. Better yet, please help to make it into something more worthwhile than it currently is. SYSLOGOUT(8)
All times are GMT -4. The time now is 01:33 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy