I have a growing file . I knew only last few lines which is constant for evey job run. I'd need to pull the Nth record from the last line. In this case i should not use search pattern.
If you want the last line, use:
Code:
tail -n 1
How you pull the record from a specific position depends on how the record is delimited and what tools you have available (sed, awk, Perl, etc.).
I have a comma-separated record and I'd like to use sed to pull the Nth record from it.
It seems like it'd need to be something like this: sed -n 's/'"\,$1\,"'/&/p'
Am I close? (3 Replies)
does anyone have an awk one-liner to:
print the first line, the second line, then every Nth line, and the last line of a file.
Thanks,
Kenny. (5 Replies)
Hi,
I have a input file with the following entries:
1one
2two
3three
1four
2five
3six
1seven
1eight
1nine
2ten
The output should be
1one
2two
3three
1four
2five
3six (2 Replies)
Hi,
I have a input file with the following entries:
1one
2two
3three
1four
2five
3six
1seven
1eight
1nine
2ten
2eleven
2twelve
1thirteen
2fourteen
The output should be: (5 Replies)
Hi,
For my reuirement, I have to read a file from the 2nd line till the last line<EOF>.
Say,
I have a file as test.txt, which as a header record in the first line followed by records in rest of the lines.
for i in `cat test.txt`
{
echo $i
}
While doing the above loop, I have read... (5 Replies)
can you please tell me
(1) how to delete 1st and 3rd line only from a file.
(2) How to delete last 4 lines in a file that has 2 blank lines out of last 4 lines.
Thank you. (2 Replies)
Is there an awk script that can easily perform the following operation?
I have a data file that is in the format of
1944-12,5.6
1945-01,9.8
1945-02,6.7
1945-03,9.3
1945-04,5.9
1945-05,0.7
1945-06,0.0
1945-07,0.0
1945-08,0.0
1945-09,0.0
1945-10,0.2
1945-11,10.5
1945-12,22.3... (3 Replies)
Hi all,
Greetings. I am facing some troubles and hope that the professionals here could help me.
I am handling a large dataset, and part of it is like below:
1 ab139 0 752566 G A
1 ab151 0 846808 T C
1 ab142 0 854250 G A
1 ab061 0 861808 A G
1 ab043 0 873558 T G... (4 Replies)
Hi All,
I am using UNix Sun OS sun4u sparc SUNW,SPARC-Enterprise
My intention is to insert a line of text after 13th line of every file inside a particular directory.
While trying to do it for a single file , i am using sed
sed '3 i this is the 4th line' filename
sed: command garbled: 3... (5 Replies)
My file (the output of an experiment) starts off looking like this,
_____________________________________________________________
Subjects incorporated to date: 001
Data file started on machine PKSHS260-05CP
**********************************************************************
Subject 1,... (9 Replies)
Discussion started by: samonl
9 Replies
LEARN ABOUT DEBIAN
pull-lp-source
PULL-LP-SOURCE(1) General Commands Manual PULL-LP-SOURCE(1)NAME
pull-lp-source - download a source package from Launchpad
SYNOPSIS
pull-lp-source [options] source package [release|version]
DESCRIPTION
pull-lp-source downloads and extracts the specified version of <source package> from Launchpad, or the latest version of the specified
release. To request a version from a particular pocket say release-pocket (with a magic -release for only the release pocket). If no ver-
sion or release is specified, the latest version in the development release will be downloaded.
OPTIONS
Listed below are the command line options for pull-lp-source:
source package
This is the source package that you would like to be downloaded from Launchpad.
version
This is the version of the source package to be downloaded.
release
This is the release that you would like the source package to be downloaded from. This value defaults to the current development
release.
-h, --help
Display a help message and exit.
-d, --download-only
Do not extract the source package.
-m UBUNTU_MIRROR, --mirror=UBUNTU_MIRROR
Use the specified Ubuntu mirror. Should be in the form http://archive.ubuntu.com/ubuntu. If the package isn't found on this mir-
ror, pull-lp-source will fall back to Launchpad, as its name implies.
--no-conf
Do not read any configuration files, or configuration from environment variables.
ENVIRONMENT
All of the CONFIGURATION VARIABLES below are also supported as environment variables. Variables in the environment take precedence to
those in configuration files.
DIST Specifies the default target.
CONFIGURATION VARIABLES
The following variables can be set in the environment or in ubuntu-dev-tools(5) configuration files. In each case, the script-specific
variable takes precedence over the package-wide variable.
PULL_LP_SOURCE_UBUNTU_MIRROR, UBUNTUTOOLS_UBUNTU_MIRROR
The default value for --mirror.
SEE ALSO dget(1), pull-debian-source(1), pull-debian-debdiff(1), ubuntu-dev-tools(5)AUTHOR
pull-lp-source and this manual page were written by Iain Lane <iain@orangesquash.org.uk>. Both are released under the GNU General Public
License, version 3 or later.
ubuntu-dev-tools 4 August 2008 PULL-LP-SOURCE(1)