10-22-2010
Quote:
Originally Posted by
DukeNuke2
1 and s is the same... S is something other...
Actually, "s" and "S" are the same, 1 is something slightly different.
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1. UNIX for Dummies Questions & Answers
I have written a daemon and want to make sure that it starts up again after the machine is re-started so I can quit manually doing it. Problem is I'm having difficulty understanding what to do with the init.d
Any help would be appreciated! (1 Reply)
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2. UNIX for Advanced & Expert Users
Hi Expert,
I have encountered some problem with my SUN system. Everytime when i issue command #init 6 OR #init 0 it just logout and prompt for login again instead of rebooting the server when run init 6 and system shutdown when run init 0..
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3. Solaris
root@test09 # ls -al /sbin/init
-r-xr-xr-x 1 root sys 550000 Jun 29 2002 /sbin/init
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4. UNIX for Dummies Questions & Answers
I know if a parent process exits before its child, the last one becomes orphan for a while and then is added to the children of Init process.
I'd like to know deeper
1 how the orphan becomes init process,
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5. Linux
Dear all,
I typed in init 1 on my redhat box as root and according to wikipedia (http://en.wikipedia.org/wiki/Runlevel):
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6. Red Hat
What is the difference between 'init s' and 'init 1'.
I know that both will work to change the current run level to single user mode.
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7. Solaris
Hi,
Can somebody please tell me the difference between the files in /etc/rc2.d and those in /etc/init.d? I am asking because on one system, I got a sysedge file S99.sysedge under /etc/rc2.d and it has a soft link to the /etc/init.d/sysedge.
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Hi,
I am experiencing a weird thing on my SUNFIRE machine with Solaris 9 OS.
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9. Red Hat
I encountered a problem on one of our database servers.
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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)