Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Shell script to filter certain lines from a file
Top Forums UNIX for Beginners Questions & Answers Shell script to filter certain lines from a file Post 303035806 by Don Cragun on Monday 3rd of June 2019 07:37:57 PM
Old 06-03-2019
Note that if you keep coming to us with requests for us to write code for you with you not attempting to write any code on your own, we're likely to lose interest in helping you. We are here to help you learn how to do this stuff on your own; not to act as your unpaid programming staff.

I would be tempted to try something like:
Code:
#!/bin/ksh
awk '
/^create / {
	c = $0
}

/^from .*@/ {
	print c
	print
}' "$@"

Store the above in a file named whatever you want your utility to be named and make it executable in a directory in your search path (i.e. one of the directories named in the environment variable PATH).

If you name your utility scriptname, you can then invoke it any of the following forms:
Code:
cat pathname... | scriptname
scriptname pathname...
scriptname < pathname

where pathname... can be replaced with the pathname(s) of one or more files you want to process. (Note that there is no ... in the last form (and only one pathname can be processed using that form).
These 4 Users Gave Thanks to Don Cragun For This Post:
jim mcnamara Neo rbatte1 tomato00
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

need help--script to filter specific lines from multiple txt files

Hi folks, - I have 800 txt files - those files are cisco router configs router1.txt router2.txt ... router800.txt I want to accomplish the following: - I want to have a seperate file with all the filenames that I want to process - I want a script that goes trough all those... (7 Replies)
Discussion started by: I-1
7 Replies

2. Shell Programming and Scripting

how do I filter double lines from a txt file

Hi, I have a file with the following: access-list.txt router1 access-list 1 permit any any access-list 1 deny any any router2 access-list 2 permit any any access-list 2 deny any any router3 access-list 3 permit any any access-list 3 deny any any I want to hava an output that... (10 Replies)
Discussion started by: I-1
10 Replies

3. Shell Programming and Scripting

Filter out lines of a cvs from values from an other file

Hi there, I have a comma seperated file which looks like 16-Jun-08,KLM forwarder,,AMS,DXB,AMS,C,Y,G10,074-02580900,milestone failed - message not received,C,OK,,13/06/2008 00:00,KL427,13/06/2008 00:00,KL427,Rebooked,C,milestone failed - message not received,milestone failed - evented... (3 Replies)
Discussion started by: sickboy
3 Replies

4. Shell Programming and Scripting

Shell script to read lines in a text file and filter user data

hi all, I have this file with some user data. example: $cat myfile.txt FName|LName|Gender|Company|Branch|Bday|Salary|Age aaaa|bbbb|male|cccc|dddd|19900814|15000|20| eeee|asdg|male|gggg|ksgu|19911216||| aara|bdbm|male|kkkk|acke|19931018||23| asad|kfjg|male|kkkc|gkgg|19921213|14000|24|... (4 Replies)
Discussion started by: srimal
4 Replies

5. UNIX for Dummies Questions & Answers

Shell script to read lines in a text file and filter user data Shell Programming and Scripting

sxsaaas (3 Replies)
Discussion started by: VikrantD
3 Replies

6. Shell Programming and Scripting

Help with shell script - filter txt file full of ips

Hello again gentlemen. I would like to make a shell script to 'optimize' a plain text full of IPs. Let's suppose to have this text file: 1.192.63.253-1.192.63.253 1.0.234.46/32 1.1.128.0/17 1.116.0.0/14 1.177.1.157-1.177.1.157 1.23.22.19 1.192.61.0-1.192.61.99 8.6.6.6 I want to... (2 Replies)
Discussion started by: accolito
2 Replies

7. Shell Programming and Scripting

Filter all the lines with minimum specified length of words of a text file

Hi Can someone tell me which script will work best (in terms of speed and simplicity to write and run) for a large text file to filter all the lines with a minimum specified length of words ? A sample script with be definitely of great help !!! Thanks in advance. :) (4 Replies)
Discussion started by: my_Perl
4 Replies

8. Shell Programming and Scripting

Shell script to filter records in a zip file that contains matching columns from another file

Not sure if this is the correct forum for this question. I have two files. file1.zip, file2 Input: file1.zip col1, col2 , col3 a , b , 0:0:0:0:0:c436:9346:d40b x, y, 0:0:0:0:0:880:39f9:c9a7 m, n , 0:0:0:0:0:80c7:9161:fe00 file2.txt col1 c4:36:93:46:d4:0b... (1 Reply)
Discussion started by: anil.v
1 Replies

9. Shell Programming and Scripting

What is the function of the following lines at the top of a shell script file: Directory and Script?

The file starts like this: Directory: <path to the script> Script: <script fife name> #!bin/ksh ##Comments <actual script> What is the use of the first two lines in the script? What if I save the file without them? What will be the effect? They are not comments. Im very new to this,... (4 Replies)
Discussion started by: remytom
4 Replies

10. Shell Programming and Scripting

Shell script to pass the config file lines as variable on the respective called function on a script

I want to make a config file which contain all the paths. i want to read the config file line by line and pass as an argument on my below function. Replace all the path with reading config path line by line and pass in respective functions. how can i achieve that? Kindly guide. ... (6 Replies)
Discussion started by: sadique.manzar
6 Replies

LEARN ABOUT DEBIAN

dtc_kill_vps_disk

dtc_kill_vps_disk(8)					      System Manager's Manual					      dtc_kill_vps_disk(8)

NAME

       dtc_kill_vps_disk - destroy LVM disks for freeing space

SYNOPSIS

       dtc_kill_vps_disk VPS_NUMBER [ lvm|loopback ]

DESCRIPTION

       dtc_kill_vps_disk This shell script is a part of the dtc-xen package that is to be used by the dtc panel to manage a Xen VPS server.

       This  script  is used to delete a partitions that was used by a VPS.  It will delete the normal partition that was used as a root disk, and
       the swap partition.

       dtc_kill_vps_disk is to be used by the dtc-xen SOAP server, but can also be used as a standalone userland tool.

OPTIONS

       VPS_NUMBER has to be a number between 01 and 19. Let's say the number is 16, and that dtc-xen is configured to use the volume group  called
       lvm1, then this script will create /dev/lvm1/xen16 and /dev/lvm1/xen16swap.

       IMAGE_TYPE  This  parameter  can have 2 values: either lvm or loopback. If ommited, then lvm is used. If lvm is used, then this script will
       create a partition using lvmcreate, otherwise it will create an image file. Both will later be used for the VPS.

EXAMPLE

       dtc_setup_vps_disk 04 lvm

       This will delete the 2 LVM partitions that were used by the VPS named xen04, the first one being the root partition,  and  the  second  one
       being the swap partition.

VERSION

       This documentation describes dtc_kill_vps_disk See http://www.gplhost.com/software-dtc-xen.html for updates.

SEE ALSO

       dtc_reinstall_os(8), dtc_setup_vps_disk(8)

															      dtc_kill_vps_disk(8)
All times are GMT -4. The time now is 06:32 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy