I have a file like this..
Maharastra Mumbai worli
Maharastra Mumbai navy
maharatra Pune
Maharastra Nagpur
Karnataka Bangalore
Karnataka Mysore
Karnataka Mangalore
Punjab Amritsar
punjab Jalandar
my expected outcome should be like this
Maharastra Mumbai worli
---------- ... (9 Replies)
Hi all,I am really new to Shell Scripting.I have the following doubt.
Let us assume the one sample file which contains the below data
HEADERCARMENTRACIE1555090414
PERIOD0905090501090531
DETAIL0645693037023073836
GROUNDAV 090501 01
GROUNDAV 090502 01
TRIP 0091282542 0905084101... (5 Replies)
I have my data something like this
I need to search for the keyword yyyy in the susequent lines and if it is present, delete the second line with keyword.
In other words, if a keywords is found in two subsequent lines delete the second line.
input data:
aaaa bbbbb cccc dddd
xxxx... (4 Replies)
Hi, I need to grep a pattern and fetch subsequent lines till end of the data-set.
E.g., i have a file like:
AA 1111 23 34
BB 45 56 78
CC 22 44
AA 2222 78 34 56
BB 22 56 67 68 23
CC 56 78
DD 33 55 77
AA 3333 46
BB 58 79
In above file i have 3-data sets where each set starts with... (6 Replies)
I've run into a problem getting exactly what I want out of awk - some folks may recognize this as an output from Amazon's ec2-describe-instances:
Given the following:
INSTANCE i-4960f321
BLOCKDEVICE Line2Var2
TAG instance i-4960f321 Name web1
TAG instance i-4960f321... (2 Replies)
Hi ,
I have been trying to write a perl script to do this job. But i am not able to achieve the desired result. Below is my code.
my $current_value=12345;
my @users=("bob","ben","tom","harry");
open DBLIST,"<","/var/tmp/DBinfo";
my @input = <DBLIST>;
foreach (@users)
{
my... (11 Replies)
Hi,
I have a requirement like, I have a list of pattens in a file say pattern.txt,
PHC111
PHC113
and in another file called master.lst i have entries like,
PHC111
a
b
PHC112
a
PHC113
b
c
PHC114
d
e (5 Replies)
Discussion started by: rbalaj16
5 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS --debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.8.4 2005-05-03 SHELL-QUOTE(1p)