03-27-2010
Hi Franklin,
It will be great if you explain your sed command execution.
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Hi,
Below is my script which creates a file:
#!/bin/sh
if
then
echo "Enter bill period "
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exit
fi
sqlplus uname/pwd@dbname <<EOF
set WRAP off
set FEEDBACK off
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Hi,
Lets say I have a few xml files:
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abc_1234567895.xml
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Hi guys I need you ,please help me
i have to do this for tomorow and i don't understand how to do
Q1 : Order the words of RADIO.txt by frequency
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input
Predictions for job: 1299399580
**********************************************
gg18_qqq10_100017878_100017978_-
==============================================================================
zzz Factor: XXX, ttt: crsmsgw, Cutoff: 0.6429
seqe Position fff Coordinate K-mer Score ... (3 Replies)
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Is it possible to re-order certain rows as columns (of large files).
Few lines from the file for reference.
input
Splicing Factor: Tra2beta, Motif: aaguguu, Cutoff: 0.5000
Sequence Position Genomic Coordinate K-mer Score
97 chr1:67052604 uacuguu 0.571
147... (3 Replies)
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file1
1 SNP2 3
1 SNP3 3
1 SNP5 4
2 SNP1 4
2 SNP4 4
file2
SNP1 1 1 1
SNP5 5 5 5
SNP4 4 4 4
SNP2 2 2 2
SNP3 1 1 1
desired output (1 Reply)
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1
2
4
5
3
I would like to use a script so that i can randomly rearrange these numbers such as
3
5
2
4
1
Thanks! (3 Replies)
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Hi All,
I have directories under
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20120421
20120414
.
.
.
.
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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)