01-05-2012
10 More Discussions You Might Find Interesting
1. Programming
Hello all,
I'm going to be using some of the date functions from time.h to do some time stamping. I will be getting a time and date from the header of a TIFF file. I will need to be able create a time for each time zone in the U.S. The source of the time stamp will be in GMT. What I'd like to do... (2 Replies)
Discussion started by: shldBcding
2 Replies
2. UNIX for Dummies Questions & Answers
I'm having an issue when I export within my program. I'm getting the variable name, not the variable value. I have a configuration file (config.txt) that has the values of the variables set as so:
set -a
export ARCHIVEPOSourceDir="/interfaces/po/log /interfaces/po/data"
export... (2 Replies)
Discussion started by: ParNone
2 Replies
3. Shell Programming and Scripting
okay, this shouldn't be difficult but I can't figure it out. How can I set a variable with another variable. I have the following:
foreach pe ($dir $sp)
set tpe = `echo $pe | grep M`
if ($tpe == M) then
set ${$pe} = M <--- This doesn't work
else
endif
end
In this case what... (2 Replies)
Discussion started by: wxornot
2 Replies
4. Shell Programming and Scripting
In ksh I thought a global variable was any variable in a script or function that did not have the typeset command. I have a global in my calling script which I increment in a function, but the value does not change in the calling script. Here is the code:
function f_open_log
{
typeset -r... (5 Replies)
Discussion started by: robotball
5 Replies
5. Solaris
I am working with solaris 9 sunBlade150 Box.
I Installed a program, need to set the environment variable so that when the executable is entered,it finds the path to the executable.
The documentation for the software says: Set the appropriate environment variable:
Connect to server failed;... (8 Replies)
Discussion started by: smartgupta
8 Replies
6. Shell Programming and Scripting
Hi,
I am new to UNIX. I wonder how to set value to variable in UNIX..
my code:
if ; then EXIST=$a ; else EXIST=$b ; fi'
echo $EXIST
the value of EXIST is empty...
Thanks :) (5 Replies)
Discussion started by: suigion
5 Replies
7. Shell Programming and Scripting
Hi everybody. I am finishing this program but there is just one detail.
I need to define the number of files that have to be deleted in this way MAXFILES=3 ./program 1 2 3 4 if the $# is > MAXFILES then confirm otherwise just delete them. But if i don't define the MAXFILES like ... (1 Reply)
Discussion started by: bartsimpsong
1 Replies
8. HP-UX
Hi,
I am using hp unix
i want to know the use of the following commands
set --
set - variable
thanks (4 Replies)
Discussion started by: gomathi
4 Replies
9. Shell Programming and Scripting
hi,
i'm not a root user and i want to know which user and in which file is loaded a variable seen in the "env" display ?
I will use this variable but i want to be sure that it will be a permanent variable !
i don't see it in my files (.profile , kshrc...) and neither in /etc/profile.
... (3 Replies)
Discussion started by: Nicol
3 Replies
10. Linux
Hi all,
I used to set variable by read from keyboard
read -p 'Input new value for variable :' var
Now I want to pipe from ls and set to var
a.txt b.txt c.txt
ls | grep a.txt | read var
why this cannot set the $var.
What is the different between them....:wall: (4 Replies)
Discussion started by: mainsun
4 Replies
NICE(2) Linux Programmer's Manual NICE(2)
NAME
nice - change process priority
SYNOPSIS
#include <unistd.h>
int nice(int inc);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
nice(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE
DESCRIPTION
nice() adds inc to the nice value for the calling process. (A higher nice value means a low priority.) Only the superuser may specify a
negative increment, or priority increase. The range for nice values is described in getpriority(2).
RETURN VALUE
On success, the new nice value is returned (but see NOTES below). On error, -1 is returned, and errno is set appropriately.
ERRORS
EPERM The calling process attempted to increase its priority by supplying a negative inc but has insufficient privileges. Under Linux the
CAP_SYS_NICE capability is required. (But see the discussion of the RLIMIT_NICE resource limit in setrlimit(2).)
CONFORMING TO
SVr4, 4.3BSD, POSIX.1-2001. However, the Linux and (g)libc (earlier than glibc 2.2.4) return value is nonstandard, see below. SVr4 docu-
ments an additional EINVAL error code.
NOTES
SUSv2 and POSIX.1-2001 specify that nice() should return the new nice value. However, the Linux syscall and the nice() library function
provided in older versions of (g)libc (earlier than glibc 2.2.4) return 0 on success. The new nice value can be found using getprior-
ity(2).
Since glibc 2.2.4, nice() is implemented as a library function that calls getpriority(2) to obtain the new nice value to be returned to the
caller. With this implementation, a successful call can legitimately return -1. To reliably detect an error, set errno to 0 before the
call, and check its value when nice() returns -1.
SEE ALSO
nice(1), renice(1), fork(2), getpriority(2), setpriority(2), capabilities(7)
COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2007-07-26 NICE(2)