01-23-2013
It may not be the wisest thing to do to continuously log in and out the remote system. Why don't you run the loop on the remote server and have it kick off the local action from there?
8 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have duplicates records in a file, but they are not consecutive. I want to remove the duplicates , using script.
Can some one help me in writing a ksh script to implement this task.
Ex file is like below.
1234
5689
4556
1234
4444 (7 Replies)
Discussion started by: Srini75
7 Replies
2. Shell Programming and Scripting
Hi all,
I'm looking for some tips on an ideal method of parsing a huge fixed length flat file (~500gb) into a delimited text file. We have to do this because our data warehouse platform only accepts delimited file loads. In the past, we've done this with SAS (only on smaller ~40GB files) by... (1 Reply)
Discussion started by: cg2
1 Replies
3. Shell Programming and Scripting
I have a huge collection of HTML files. They have their own file names with htmlextension. I want to rename each of these files with continuous numbers starting from 1.html till the last count of files. Simply it means that if there are three files like this
abc.html
cdfhg.html
rmbd.htmlthen... (1 Reply)
Discussion started by: shoaibjameel123
1 Replies
4. Shell Programming and Scripting
I have several production servers and 1 offline server. Production server continuously generates new log files for my application. Depending on time of day new files may be generated every few seconds and at other times every few hours. I also have an offline server where I would like to pull log... (3 Replies)
Discussion started by: yoda9691
3 Replies
5. Shell Programming and Scripting
I need to write something that will read and execute all the files(Mainly executable scripts) inside one or more folders; in other words, a continuous chain with a break when finished. I'm new to shell and need syntax help. I'm on Ubuntu 12.10-Gnome btw.
Here are some main highlights I think... (2 Replies)
Discussion started by: linuxlololol
2 Replies
6. Shell Programming and Scripting
I have 100k data like this bellow , i want to group data to range
171
172
173
174
175
176
179
182
183
187
188
189
1900
1901
1903
1904
1905
1906 (10 Replies)
Discussion started by: before4
10 Replies
7. Shell Programming and Scripting
Hello Folks,
Looking for a script, where i can check for the existing of the files in a directory and copying to another.
How can i achieve it in loop for over period of time.
whatever files comes into the folder copied in another without duplicate and should be continuous loop.
... (8 Replies)
Discussion started by: sadique.manzar
8 Replies
8. UNIX for Beginners Questions & Answers
Hi All,
Please help
*****************
a=100 and run for loop that will minus 30 from 100 an will display value
run loop will run till display value will be 0
*****************
Thanking you (1 Reply)
Discussion started by: Praful Pednekar
1 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)