2 ) how to call one shell script from other script without creating new process ? interviewer told me i want to use $aaa from a.sh script to b.sh without exporting it ?
Dont understand.. Is he thinking of exec ?
Quote:
4 ) how to display all ENV varaibles without using env command ? from shell and then from perl ( perl i will figure out ..)
I'm trying to find out what all is involved with setting up SFTP?
1) Do Solaris machines come with a SFTP server and client already installed.
2) If so would I have to install SFTP clients on windows, if I want to transfer files to a Solaris box?
3) If SFTP doesn't come prepackaged would I... (1 Reply)
Hi-
Newbie here with some basic questions:
1) I can't get alias to work. I tried alias ll='ls -al', but it doesn't work. When just typing 'alias', the new definition doesn't appear. I'm in a bash shell -- is that the problem. I tried switching to csh, but that didn't seem to help. This... (5 Replies)
Hi there.
I've got 12 years experience writing C++ on Windows, and 3 years C# on Windows. Now my boss wants me to write a C++ app to run on Unix as a multithreaded 'service' (i.e. a program that runs with no user intervention).
Some quick questions for The Experts:
* Whats the best C++... (3 Replies)
Hey guys,
I've seen this posted a few times when i searched but I kinda want to know the cleanest way of doing it.
On Solaris 8 and Solaris 9
What is the best way to disable telnet ssh1 and remote root login premanently?
I've seen posts that say edit /etc/services edit this edit that... (3 Replies)
I have multiple questions
How to list or find only Nov month's files?
How can I get state of process like running, stop, or sleep etc?
How can I check dependences of processes?
plz ans any if u can
thx regards,
Mazhar Hussain (3 Replies)
what is a assembler
what isa interpreter
what is a compiler
what is a socket
what is a port
what is meant by listening to a port how we do it
how to know version and standard of unix one is using when one is on public access unix account
how to see a jobid in... (1 Reply)
Discussion started by: scimitar
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)