10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
This is on a CentOS box, I have two scripts that need to run in order.
I want to write a shell script that calls the first script, lets it run and then terminates it after a certain number of hours (that I specify of course), and then calls the second script (they can't run simultaneously) which... (3 Replies)
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2. UNIX for Dummies Questions & Answers
Hi!
I'm not sure how, (or if), Apple updates stuff in the standard unix installation of OS X, but whenever I have occasion to check a version number of something in my standard install, it is outdated. Normally, I will then install the newer version via ports, which usually becomes the default.... (3 Replies)
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3. UNIX for Dummies Questions & Answers
After much reflecting I decided that I don't want to have a remote managemente in my computer and I digited in Terminal from the Administrator Account:
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4. Red Hat
i do not know much about linux, but i have a machine running ONLY red hat enterprise linux AS (or at least that is what i used to see when i start my machine). i was doing something on my machine and there was a power cut. my system went off and now when i restart the machine the first thing it... (2 Replies)
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5. UNIX for Advanced & Expert Users
Dear Fellows;
As being new to linux, i have tried to synamically load a custom library which overrides some system calls like conncet(), socket() etc.... for custom purposes.
It works well, if declaring the environment path LD_PRELOAD and execution of the application to be override... (0 Replies)
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6. Filesystems, Disks and Memory
why do inode indices starts from 1 unlike array indexes which starts from 0
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id be glad if i get to know the answer quickly
:) (0 Replies)
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7. Shell Programming and Scripting
Like class loader in java, can we make a function loader in shell script, for this can someone throw some light on how internally bash runs a shell script , what happenes in runtime ...
thanks in advance.. (1 Reply)
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8. UNIX for Dummies Questions & Answers
Hi folks,
I tried to load a copy of redhat from CD to an HP6640C. The system reads the first disk and offers me a choice to use the graphic load or the text load. I selct either one and the system seems to start reading the disk then it reboots.
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9. Shell Programming and Scripting
how would I set up a custom application to startup at boot up. Also where would I look to see what application already startup. I don't mean the /etc/rc.d/.... directory. I need to see all the custom applications that are not part of the linux environment.
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10. Programming
Can any one help me out????
I need to install GDB and GCC in an UNIX machine.
can any one point me to any lucid pointer to it.
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launchd(8) BSD System Manager's Manual launchd(8)
NAME
launchd -- System wide and per-user daemon/agent manager
SYNOPSIS
launchd [-d] [-D] [-s] [-S SessionType] [-- command [args ...]]
DESCRIPTION
launchd manages processes, both for the system as a whole and for individual users. The primary and preferred interface to launchd is via
the launchctl(1) tool which (among other options) allows the user or administrator to load and unload jobs. Where possible, it is preferable
for jobs to launch on demand based on criteria specified in their respective configuration files.
During boot launchd is invoked by the kernel to run as the first process on the system and to further bootstrap the rest of the system.
You cannot invoke launchd directly.
ENVIRONMENTAL VARIABLES
LAUNCHD_SOCKET
This variable is exported when invoking a command via the launchd command line. It informs launchctl how to find the correct launchd
to talk to.
NOTES
In Darwin, the canonical way to launch a daemon is through launchd as opposed to more traditional mechanisms or mechanisms provided in ear-
lier versions of Mac OS X. These alternate methods should be considered deprecated and not suitable for new projects.
In the launchd lexicon, a "daemon" is, by definition, a system-wide service of which there is one instance for all clients. An "agent" is a
service that runs on a per-user basis. Daemons should not attempt to display UI or interact directly with a user's login session. Any and all
work that involves interacting with a user should be done through agents.
If you wish your service to run as a certain user, in that user's environment, making it a launchd agent is the ONLY supported means of
accomplishing this on Mac OS X. In other words, it is not sufficient to perform a setuid(2) to become a user in the truest sense on Mac OS X.
FILES
~/Library/LaunchAgents Per-user agents provided by the user.
/Library/LaunchAgents Per-user agents provided by the administrator.
/Library/LaunchDaemons System-wide daemons provided by the administrator.
/System/Library/LaunchAgents Per-user agents provided by Mac OS X.
/System/Library/LaunchDaemons System-wide daemons provided by Mac OS X.
SEE ALSO
launchctl(1), launchd.plist(5),
Darwin 1 May, 2009 Darwin
