Hey Guys,
I have file which looks like this,
Contig201#numbPA
Contig1452#nmdynD6PA
dm022p15.r#CG6461PA
dm005e16.f#SpatPA
IGU001_0015_A06.f#CG17593PA
I need to remove duplicates based on the chracter matching upto '#'.
for example if we consider this..
Contig201#numbPA... (4 Replies)
Hello,
I have two files. File1 or the master file contains two columns separated by a delimiter:
a=b
b=d
e=f
g=h
File 2 which is the file to be processed has only a single column
a
h
c
b
What I need is an awk script to identify unique names from file 2 which are not found in the... (6 Replies)
Hello,
I have a large amount of data with the following structure:
Word=Transliterated word
I have written a Perl Script (reproduced below) which goes through the full file and identifies all dupes on the right hand side. It creates successfully a new file with two headers: Singletons and Dupes.... (5 Replies)
Hi,
I have a file that is 430K lines long. It has records like below
|site1|MAP
|site2|MAP
|site1|MODAL
|site2|MAP
|site2|MODAL
|site2|LINK
|site1|LINK
My task is to count the number of time MAP, MODAL, LINK occurs for a single site and write new records like below to a new file
... (5 Replies)
Hi i want to fetch 100k record from a file which is looking like as below.
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
... (17 Replies)
Hello,
I have a very large dictionary file which is in text format and which contains a large number of sub-sections. Each sub-section starts with the following header :
#DATA
#VALID 1
and ends with a footer as shown below
#END
The data between the Header and the Footer consists of... (6 Replies)
I'm trying to remove duplicate data from an input file with unsorted data which is of size >50GB and write the unique records to a new file.
I'm trying and already tried out a variety of options posted in similar threads/forums. But no luck so far..
Any suggestions please ?
Thanks !! (9 Replies)
Dear all,
I have a large dictionary database which has the following structure
source word=target word
e.g.
book=livre
Since the database is very large in spite of all the care taken, it so happens that at times the source word is repeated
e.g.
book=livre
book=tome
Since I want to... (7 Replies)
I am trying to remove whitespaces from a file containing sample data as:
457 <EOFD> Mar 1 2007 12:00:00:000AM <EOFD> Mar 31 2007 12:00:00:000AM <EOFD> system <EORD> 458 <EOFD> Mar 1 2007 12:00:00:000AM<EOFD>agf <EOFD> Apr 20 2007 9:10:56:036PM <EOFD> prodiws<EORD> . Basically these... (11 Replies)
Discussion started by: amvip
11 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)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 v5.16.3 2010-06-11 SHELL-QUOTE(1)