hi,
i am one day old in shell scritpting. how to invoke one shell script from the other?
For eg.i have two shell scripts A.sh and B.sh. Inside A.sh i need to invoke B.sh and the return code of A.sh should be the value returned by B.sh.
it would be better if you provide any sample shell... (3 Replies)
list me commands to invoke a shell script from php once the submit button is clicked in the php page. Requirement is Once a submit button is clicked it should run a script that displays the outcome of the script in a html/php. Please help.
Thanks in Advance,
BubeshJ (2 Replies)
Hi everybody,
I have a script in which I'm invoking another script which runs in a subshell.
after the script is executed I want to return to the parent shell as some variables are set. However i'm unable to return to my original shell as the script which i'm calling inside is invoked in... (5 Replies)
Hi,
I am running a script from a client machine X which does "SSH" to around 100 other machines in a farm and invokes a local script on each of those machines. Local script localscript.sh on each of those 100 target machines, does some machine specific function like fetch the specific machine's... (1 Reply)
I have turned off PermitEmptyPasswords in sshd_config, but a user with empty passwd (deleted by passwd -d user) can still login without password, why? it is big security concern, linux doesn't have the issue.
$ uname -a
SunOS 5.10 Generic_118855-14 i86pc i386 i86pc
... (8 Replies)
Hello
I have a .sh script that needs to take a template and replace zzz in the template file with the user's name. I cannot figure out how to make the following work from my script (works from the command prompt) but not when I put it inside a *.sh script
sed 's/xxx/$USER/g' template.conf >... (2 Replies)
I am writing a script and need to get the hostname of the remote server in order to zip that file... the syntax in which the file is named is "hostname.html."
This is the line I am trying to use
ssh $host "/bin/gzip /tmp/`hostname`.html" >> $PATH_TMP/Linux_cfg2html.log
but whenever I run it... (26 Replies)
I am new to Unix. Could some tell me what are all the possible ways of invoking/executing a script, doesnt matter which shell you are in. Thanks (4 Replies)
hi all,
is there a way to run a script upon invoking an application . for eg if i click on mozilla i want a script to run , before runniing mozilla , maybe ask a password or something only then open mozilla (2 Replies)
Hi All,
I have a scenario :
1. A list of servers naming server21, server 22, server 23 etc. This list of servers is separate for my environments.
Env1 has 3 server
Env2 has 5 serves
Env3 has 10 servers
2. Each server accesses application through which I want to invoke some method. So... (7 Replies)
Discussion started by: ankur328
7 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)