I have Parent script that will execute a child script. The child script will take about 2 hours to run and I wanted to somehow build a logic for parent.sh to wait and perform ps -ef|grep cp|grep -v on the child.sh cp process and loop and check return code of child.sh $? as well. Once they are both... (3 Replies)
I 'm new to unix shell scripting can some one guide me to any e-book or link from where i can learn unix shell scripting .. i want to learn create interactive scripts for my day to day solaris work. Any help would be appreciated (1 Reply)
I am comfortable with shell scripting. I need a better logic for below,
I've a reference file, to take the parameter value. For example in the no of channel is 6 i have get the commands as written below. I need need a differenct logic to extract the commands.
NO_OF_CHANNEL=6
case... (3 Replies)
hi experts,
i m a btech student......my mini project is making a secure unix shell which is intented to stop mal practice in educational environment...........in other words need to create a new shell in which commands like cp do not work....can anyone suggest me how to begin with it....refrence... (3 Replies)
Hello Experts,
I have the following questions to be discussed here at this esteemed discussion forum.
I have two Excel sheets which contain Unix Commands llike creating directory the structure/ftp/Copy/Zip etc to basically create an environment. I need help in understanding some of... (1 Reply)
I'm sorry if this doesn't go here, but I'm in depserate need of help with my last unix homework.
Anyways, I'm taking summer classes, and one of them is UNIX. I've understood everything thus far, but I'm having a killer time with how my instructor has worded the problems for shell scripting. I... (3 Replies)
Discussion started by: dw15
3 Replies
LEARN ABOUT SUNOS
_lwp_cond_broadcast
_lwp_cond_signal(2) System Calls _lwp_cond_signal(2)NAME
_lwp_cond_signal, _lwp_cond_broadcast - signal a condition variable
SYNOPSIS
#include <sys/lwp.h>
int _lwp_cond_signal(lwp_cond_t *cvp);
int _lwp_cond_broadcast(lwp_cond_t *cvp);
DESCRIPTION
The _lwp_cond_signal() function unblocks one LWP that is blocked on the LWP condition variable pointed to by cvp.
The _lwp_cond_broadcast() function unblocks all LWPs that are blocked on the LWP condition variable pointed to by cvp.
If no LWPs are blocked on the LWP condition variable, then _lwp_cond_signal() and _lwp_cond_broadcast() have no effect.
Both functions should be called under the protection of the same LWP mutex lock that is used with the LWP condition variable being sig-
naled. Otherwise, the condition variable may be signalled between the test of the associated condition and blocking in _lwp_cond_wait().
This can cause an infinite wait.
RETURN VALUES
Upon successful completion, 0 is returned. A non-zero value indicates an error.
ERRORS
The _lwp_cond_signal() and _lwp_cond_broadcast() functions will fail if:
EINVAL The cvp argument points to an invalid LWP condition variable.
EFAULT The cvp argument points to an invalid address.
SEE ALSO _lwp_cond_wait(2), _lwp_mutex_lock(2)SunOS 5.10 8 Dec 1995 _lwp_cond_signal(2)