Hi!
I've just started learning shell scripting, and have been somewhat 'thrown in at the deep-end and told to swim' so excuse my complete lack of knowledge and ignorance, but here goes...
I've been given a unix script to 'tidy up'. Basically the script consists of the few lines of code being... (2 Replies)
Hi All,
I have declared a variable in script1 and assign a value for it. In script2 i'll call script1 and then I want the value of variables set in script1.
I have tried with export, but in vain.
How can I achive this?
Below is the two scripts.
--script1
#!/usr/bin/ksh
echo $1... (1 Reply)
Hi ,
Im trying to monitor 2 instancesof a process on our solaris server and trying to do a notification if the returned process size is greater than 500M.
Since there are two variables returned I want to make use of arrays to check each and every variable that is stored. the issue that im facing... (2 Replies)
Hi,
I have two Sun Fire V490 with Solaris 10 5/08, FC switch and two Sun StorageTek 3500 FC arrays. Each array is connected to switch and to one server at a time. In the last week I installed Solaris 10 5/08 on both servers and set up Sun Cluster, version 3.2. At wednesday all was fine - all... (7 Replies)
Hi,
There are total 100 files in the backup directory with the name format as below:
prod_bkp_140611_13_30_05.txt
prod_bkp_140611_14_30_05.txt
prod_bkp_140611_15_30_05.txt
prod_bkp_140611_16_30_05.txt
How to use array variables (in perl) to get list of names of the above files ? (13 Replies)
Below is a test script I was trying to use so that I could understand why the logic was not working in a larger script. While accessing and printing array data inside the while loop, everything is fine. Outside the loop, i guess everything is null?? The for loop that is meant to cycle... (4 Replies)
Hello forum,
I am siva working as programmer .I was blocked with the below issue so please help any of the forum memebers.
testve.h
class cv
{
protected :
struct state;
state& m_state;
};
testVe.cpp
struct state
{
m_size;
}
the above are 2 files which have the... (3 Replies)
Hi,
I am having a primary script which is Bash based. I am calling a csh script from it.
Now, their are some variables defined in my bash script which i need in csh.
I am unable to do so. Is it possible ? (2 Replies)
Hi All,
I am new to c programming. I am getting compilation error in the below program. Can somebody help me?
#include<stdio.h>
#include<string.h>
void main()
{
int i=j=0;
char a={'f1',4,'f2','4'};
char count;
for(i=0;i<2;i++)
{
for(j=1;j<=2;j++)
{
... (2 Replies)
Discussion started by: sam_14189
2 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)