07-10-2009
change current working directory (typically "/)
reset file access creation mask
disassociate from process group
do not reacquire control terminal
...besides what you already have
see "Unix Network Programming - Stevens, chap. 2, section 2.6 (daemon processes)"
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
First, I just rebuilt/installed my custom kernel & I don't know how to check if it ran properly (I'm fairly sure it did, but I'm looking for reassurance that it loaded the new kernel file).
Second, I'd love to get into programming, scripting, whatever, I want my imagination to be the builder &... (2 Replies)
Discussion started by: LazySpoon
2 Replies
2. Programming
I'm a senior in high school trying to start getting into computer programming. All I've done so far is picked up a book on C for beginners and started to teach myself. There aren't really any courses at my high school for introductory programming, so it looks like I'll have to wait for college to... (7 Replies)
Discussion started by: Fritzz
7 Replies
3. Shell Programming and Scripting
Say I have a single bin directory with Linux and SunOS executables, like this:
bin/myprog_lnx
bin/myprog_sun
Assume these programs read from stdin and write to stdout and, thus, are meant to be run like this:
myprog_lnx < filein > fileout
My users may log in from a Linux or Solaris... (3 Replies)
Discussion started by: gsal
3 Replies
4. Fedora
Hey , I have become pretty normal, using unix and what not and working around FEDORA 9
I was wondering does anyone have any IDEAS or have anything I should try to build or scripts to write ,
or possibly know any sites where I could practice some things just so I know I am writing them... (2 Replies)
Discussion started by: Producer
2 Replies
5. Fedora
Okay, so I'm not a complete newb when it comes to using Unix/Linux. I've been using Ubuntu for a few years now and I've dipped my toes into a few other distros but now I want to get a bit serious.
I'm looking at becoming a sysadmin but the trouble is...I have no idea where to start. What I'm... (1 Reply)
Discussion started by: Tamachan87
1 Replies
6. AIX
picked up a 9111-520 p5 hardware recently with 8 Gig of RAM, lots of internal disk space...6 x 140 gig
had 7.1 pre-installed, and managed to upgrade the firmware to latest SF240_xxxx
goal is to virtualize this and have LPARs running aix 7.1, 6.x, and Rhat for ppc ..
need some... (13 Replies)
Discussion started by: ppchu99
13 Replies
7. Shell Programming and Scripting
Being a beginner in scripting I am not sure the direction to take to accomplish the below task and would love suggestions.
GOAL
input file: domains.list
Read input file, search in named.conf and find domain and delete entry for the purpose of cleanup activity.
named.conf entry example
zone... (8 Replies)
Discussion started by: djzah
8 Replies
8. Shell Programming and Scripting
Hi,
I have a shell script which executes some sql. When the shell script executes the sql's logging is shown on the console. I need to grep some data from this output shown on console. So I do the following
hive -f load.adj.hql 2>&1 | tee c.txt
echo $?
A=`grep num_rows c.txt`
$? will... (1 Reply)
Discussion started by: wahi80
1 Replies
9. Shell Programming and Scripting
Hi Guys,
I have this task to monitor a linux box. I found a program that displays the parameters that I want and I wrote a little .sh to run that program and record output into a file.
The findings look promising but I would like to graph them.
My output (for every iteration) looks like... (3 Replies)
Discussion started by: DraxDomax
3 Replies
LEARN ABOUT ULTRIX
renice
renice(8) System Manager's Manual renice(8)
Name
renice - alter priority of running processes
Syntax
/etc/renice priority [ [ -p ] pid ... ] [ [ -g ] pgrp ... ] [ [ -u ] user ... ]
Description
The command alters the scheduling priority of one or more running processes. The who parameters are interpreted as process ID's, process
group ID's, or user names. Using on a process group causes all processes in the process group to have their scheduling priority altered.
Using on a user causes all processes owned by the user to have their scheduling priority altered. By default, the processes to be affected
are specified by their process ID's.
Options
To force who parameters to be interpreted as process group ID's, a may be specified. To force the who parameters to be interpreted as user
names, a may be given. Supplying will reset who interpretation to be (the default) process ID's.
Users other than the superuser may only alter the priority of processes they own, and can only monotonically increase their ``nice value''
within the range 0 to PRIO_MIN (20). (This prevents overriding administrative fiats.) The superuser can alter the priority of any process
and set the priority to any value in the range PRIO_MAX (-20) to PRIO_MIN. Useful priorities are: 19 (the affected processes will run only
when nothing else in the system wants to), 0 (the ``base'' scheduling priority), anything negative (to make things go very fast).
Examples
The following command changes the priority of process ID's 987 and 32, and all processes owned by users daemon and root:
/etc/renice +1 987 -u daemon root -p 32
Restrictions
If you make the priority very negative, then the process cannot be interrupted. To regain control you make the priority greater than zero.
Non-superusers cannot increase scheduling priorities of their own processes, even if they were the ones that decreased the priorities in
the first place.
Files
Maps user names to user IDs
See Also
getpriority(2), setpriority(2)
renice(8)