Only print lines matching the pattern:
-i tells perl to modify a file in-place, -i.old or -i.bak or whatever you like, tells perl to make a backup first using the specified extension. See 'man perlrun' for the specifics.
Hello Friends,
I want to delete all the "*.trg" files in a directory but i don't want to do it by
system("rm -r *.trg");
Can i do it thru unlink or by any other mean
Thanks,
Pulkit (1 Reply)
Dear All,
I am looking for an option in perl using which i could delete empty lines in a file.
Or
the alternative of sed '/^$/d' <filename> in perl. Sed is not working in my perl script :(
Pls help me out .
Thanks,
VG (4 Replies)
Hi,
Can anyone know how to use perl to merge the following multi-line information which beginning with "BAM" into one line. For each line need to delete the return and add a space. Please see the red color line.
******Org. Multi-line)
BAM admin 101.203.57.22 ... (3 Replies)
Hello,
Did anyone know how to write a perl script to merge the multi-line into a single line where each line with start at timestamp
Input-->
timestamp=2009-11-10-04.55.20.829347;
a;
b;
c;
timestamp=2009-11-10-04.55.20.829347;
aa;
bb;
cc; (5 Replies)
Hi,
I have a file with four types of lines:
@HWUSI-EAS656_0022:8:1:175:376#0/1
CTCGACACGCTGGTGGAGATCCTCGGCCTGACCGAGGACGACCGGGCCATCTTCGAGCAGCGC
+
BBBBBBBA?AABB;<=B9<===AA1AA==>99===.9?:9A4A956%%%%%%%%%%%%%%%%%
I want to remove the first 6 characters of every second line. This means in... (10 Replies)
so in unix this command works works and shows me a list of directories
find . -name \*.xls -exec dirname {} \; | sort -u | > list.txt
but when i try running a perl script to run this command
my $query = 'find . -name \*.xls -exec dirname {} \; | sort -u | > list.txt';... (2 Replies)
Unix box server version
***********
>uname -r
B.11.00
>echo $SHELL
/usr/bin/ksh
--> in this server, I have the path like /IMbuild/dev/im0serv1
---> in that directory I have the folders startup(.jsp files nearly 100 jsp's ) and scripts(contains .js files nearly 100 files) ... (9 Replies)
I want to delete all the blank lines from a file before a certain line number. e.g.
Input file (n: denotes line number)
1: a
2:
3: b
4: c
5:
6: d
I want to delete all blank lines before line number 3, such that my output is:
a
b
c
d
I see that sed '/^$/d' in_file works... (9 Replies)
Hi All
I have a .csv file which is showing data as
ESP Client,ESP Engagement,Misc_Projects_120101,DEFAULT,HA,Unknown,No,Unknown,201704,4.1,Unknown,AAA,Collected-Done,"she,joy.",200111,Unknown,Full Time,,Delivery_DONE AMO,Approved,2012-12-03,2012-12-06,2012-12-06,"Occupied Hours ... (7 Replies)
I am looking for help in processing of those options: '-n' or '-p'
I understand what they do and how to use them.
But, I would like to use them with more than one file (and without any shell-loop; loading the 'perl' once.)
I did try it and -n works on 2 files.
Question is:
- is it possible to... (6 Replies)
Discussion started by: alex_5161
6 Replies
LEARN ABOUT DEBIAN
ptargrep
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 v5.14.2 2014-09-30 PTARGREP(1)