10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
In the awk below I am trying to cp and paste each matching line in f2 to $3 in f1 if $2 of f1 is in the line in f2 somewhere. There will always be a match (usually more then 1) and my actual data is much larger (several hundreds of lines) in both f1 and f2. When the line in f2 is pasted to $3 in... (4 Replies)
Discussion started by: cmccabe
4 Replies
2. Shell Programming and Scripting
Hi all,
I'm new to scripting.. facing some problems while inserting content of a file into another file...
I want to insert content of a file (file2) into file1, before first occurrence of "line starts with pattern" in file1
file1
======
working on linux
its unix world
working on... (14 Replies)
Discussion started by: Jagadeesh Kumar
14 Replies
3. Shell Programming and Scripting
Hi
I need to do a patten match between files .
I am new to shell scripting and have come up with this so far. It take 50 seconds to process files of 2mb size . I need to tune this code as file size will be around 50mb and need to save time.
Main issue is that I need to search the pattern from... (2 Replies)
Discussion started by: nitin_daharwal
2 Replies
4. Shell Programming and Scripting
I need to insert file x2 into x1 right before first BBB line.
$ cat x1
AAA 1
AAA 2
AAA 3
BBB 1
BBB 2
BBB 3
$ cat x2
XXX - insert 1
XXX - insert 2
I need to get
AAA 1
AAA 2
AAA 3
XXX - insert 1
XXX - insert 2
BBB 1 (2 Replies)
Discussion started by: migurus
2 Replies
5. Shell Programming and Scripting
hi all,
i had the below script
x=`cat input.txt |wc -1`
awk 'NR>1 && NR<'$x' ' input.txt > output.txt
by using above script i am able to remove the head and tail part from the input file and able to append the output to the output.txt but if i run it for second time the output is... (2 Replies)
Discussion started by: hemanthsaikumar
2 Replies
6. Shell Programming and Scripting
Hi,
I have a test.zip archive that contains
test.zip --> (file_1.txt, file_2.txt , file_3.txt)
I need to unzip the file like this,
file_1_timestamp.txt
file_1_timestamp.trg
file_2_timestamp.txt
file_2_timestamp.trg
file_3_timestamp.txt
file_3_timestamp.trg
Could you please let me know... (7 Replies)
Discussion started by: Shandel
7 Replies
7. Shell Programming and Scripting
Hi,
I need help with this-
input.txt :
L B white
X Y white
A B brown
M Y black
Read this input file and if 3rd column is "white", then add specific lines to another file insert.txt.
If 3rd column is brown, add different set of lines to insert.txt, and so on.
For example, the given... (6 Replies)
Discussion started by: prashob123
6 Replies
8. Shell Programming and Scripting
Hi ,
I am writing a shell script to check pvsizes in linux box.
# for i in `cat vgs1`
> do
> echo "########### $i ###########"
> pvs|grep -i $i|awk '{print $2,$1,$5}'>pvs_$i
> pvs|grep -i $i|awk '{print $1}'|while read a
> do
> fdisk -l $a|head -2|tail -1|awk '{print $2,$3}'>pvs_$i1
>... (3 Replies)
Discussion started by: nanduri
3 Replies
9. Shell Programming and Scripting
Hello ,
I have comma delimited file with over 20 fileds that i need to do some validations on. I have to check if certain fields are null and then write the line containing the null field into a new file and then delete the line from the current file.
Can someone tell me how i could go... (2 Replies)
Discussion started by: goddevil
2 Replies
10. Shell Programming and Scripting
hi people,
i have texts down.txt and down-new.txt and i want to check;
- if down-new.txt is NOT empty, then write date and its content to /home/gc_sw/down.txt
for example;
down.txt:AAAA
SSSS
down-new.txt:123
456
and after checking down-new.txt is NOT empty, down.txt should... (10 Replies)
Discussion started by: gc_sw
10 Replies
PTARGREP(1) Perl Programmers Reference Guide PTARGREP(1)
NAME
ptargrep - Apply pattern matching to the contents of files in a tar archive
SYNOPSIS
ptargrep [options] <pattern> <tar file> ...
Options:
--basename|-b ignore directory paths from archive
--ignore-case|-i do case-insensitive pattern matching
--list-only|-l list matching filenames rather than extracting matches
--verbose|-v write debugging message to STDERR
--help|-? detailed help message
DESCRIPTION
This utility allows you to apply pattern matching to the contents of files contained in a tar archive. You might use this to identify all
files in an archive which contain lines matching the specified pattern and either print out the pathnames or extract the files.
The pattern will be used as a Perl regular expression (as opposed to a simple grep regex).
Multiple tar archive filenames can be specified - they will each be processed in turn.
OPTIONS
--basename (alias -b)
When matching files are extracted, ignore the directory path from the archive and write to the current directory using the basename of
the file from the archive. Beware: if two matching files in the archive have the same basename, the second file extracted will
overwrite the first.
--ignore-case (alias -i)
Make pattern matching case-insensitive.
--list-only (alias -l)
Print the pathname of each matching file from the archive to STDOUT. Without this option, the default behaviour is to extract each
matching file.
--verbose (alias -v)
Log debugging info to STDERR.
--help (alias -?)
Display this documentation.
COPYRIGHT
Copyright 2010 Grant McLean <grantm@cpan.org>
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.16.2 2013-08-25 PTARGREP(1)