02-27-2012
Unless you can prove its not homework, thread is closed, and at next similar post not in homework you will be banned...
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi All,
One small request. In UNIX/LINUX we can have our own aliases in .bashrc file. My doubt is when we add a new alias and if it is tried in already opened terminals it will not work, may be it is not going to recognise. Bit when we use the same alias in new terminal it will work. I... (1 Reply)
Discussion started by: chanakyahere
1 Replies
2. UNIX for Dummies Questions & Answers
Hi,
Can anyone tell me what is IP aliasing ? I do not know if this is the right place for this thread !!.
Thanks in advance,
Gideon. (2 Replies)
Discussion started by: preethgideon
2 Replies
3. UNIX for Dummies Questions & Answers
Folks;
I know this might sound stupid, but Can i alias a web link to another web link in a UNIX server?
Let say i have a web link named http://test.new.com/wiki
Can i alias that so when i click on it or i type it in the browser address it opens but the link in the browser say something like:... (1 Reply)
Discussion started by: Katkota
1 Replies
4. UNIX for Advanced & Expert Users
HI All,
I have a small question/clarification/doubt . Does anyone know how to provide alias in the mails that come from Unix servers.
Like i have a Unix server that generates status mails every hour for a scheduled job , it sends me mails with status with the ID in from field as... (3 Replies)
Discussion started by: bsandeep_80
3 Replies
5. UNIX for Advanced & Expert Users
Here's my opportunity.... I want to turn off the * expansion, execute the shell script and have it see the arguement with the * and not all the filenames, and then set +f once the script is executed.
1) I have an alias set as follows:
alias scp='set -f; /opt/dir1/dir2/script.sh ; set +f'... (1 Reply)
Discussion started by: hsamm
1 Replies
6. Red Hat
Hi,
is it normal, that the IP alias (service IP) can't be seen with ifconfig -a , as eth0:1 for example
the IP is on the node, you can ping it, and open ports for that IP
look at this:
# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
link/loopback... (4 Replies)
Discussion started by: funksen
4 Replies
7. UNIX for Dummies Questions & Answers
#Example.sh
alias rmv 'sh Example2.sh'
when i execute exapme.sh alias name not working.
how i solve this problem?? (9 Replies)
Discussion started by: arun508.gatike
9 Replies
8. UNIX for Dummies Questions & Answers
HI Guys,
I hope you are well. I am trying to write a script that gets executed every time i open a shell (cshell). I have two questions about that
1) I need to enter these commands
$ echo $DISPLAY
$ setenv $DISPLAY output_of_echo_$display_command
How can i write a... (2 Replies)
Discussion started by: kaaliakahn
2 Replies
9. Solaris
Hello,
I need to rediret the directory location at run time as:-
If I type cd /dir1/dir2 then it should take me to /dir1/dir3 at run time.
Inside dir1, both dir2 and dir3 directories are present.
Could anyone guild me over it?
Thanks
Shubham (5 Replies)
Discussion started by: shubh05
5 Replies
10. Shell Programming and Scripting
Being able to mark in an alias definition a point of minimal abbreviation, an old feature of VAX/VMS shell (DCL) would be really nice in modern *nix shells.
In DCL you used to be able to define an alias (in its own weird syntax) which would be something like this:
$ alias fuz*zyanimals="cat... (5 Replies)
Discussion started by: unscripted
5 Replies
LEARN ABOUT HPUX
pw_getvmax
postwait(2) System Calls Manual postwait(2)
NAME
postwait: pw_getukid(), pw_wait(), pw_post(), pw_postv(), pw_getvmax() - lightweight synchronization mechanism
SYNOPSIS
DESCRIPTION
Postwait is a fast, lightweight sleep/wakeup mechanism that can be used for synchronization by cooperating kernel threads within a single
process or between separate processes.
A thread calls to block. It resumes execution when it is posted by another thread, the call expires, or is signaled. If one or more posts
are already pending, returns immediately.
Threads using postwait are identified by their ukid. A thread retrieves its ukid by calling It shares this ukid with anyone it chooses by
any means it considers appropriate (for example, shared memory).
is called with a timeout ts. If ts is NULL, the thread will not timeout. It will remain blocked until posted or a signal wakes it up.
If ts points to a zero-valued timespec, will return immediately with a value (and indicating whether or not it was posted.
If ts points to a timespec whose value is greater than zero, the thread will block for that amount of time unless it is posted or inter-
rupted by a signal, in which case the timespec pointed to by ts is updated with the remaining time. The return value and are set to indi-
cate the reason the call returned.
is used to post many threads with a single call. It posts to all threads in the targets array. An value for each target is returned in
the errors array. (0 indicates success.) If the errors pointer is zero, no target-specific errors are copied out.
There is a maximum number of threads that can be posted with a single call. This value is returned by
Posts sent to a kernel thread that already has a post pending against it are discarded.
RETURN VALUE
returns 0 if it succeeds, -1 otherwise.
returns 0 if posted, -1 otherwise.
returns 0 if the post succeeds, -1 otherwise.
returns 0 if every post succeeds, -1 otherwise.
returns the maximum number of kernel threads that can be posted with a single call to
ERRORS
sets to one of the following values if it fails:
ukid points to an illegal address. The reliable detection of this error is implementation dependent.
sets to one of the following values if it fails:
was called with a timeout of 0 but the caller has no post(s) pending.
was called with a timeout that expired.
ts points to an illegal address. The reliable detection of this error is implementation dependent.
was interrupted
by a signal.
The timespec pointed to by ts is invalid.
sets to one of the following values if it fails:
The ukid refers to a non-existent kernel thread.
sets to one of the following values if it fails:
targets points to an illegal address. The reliable detection of this error is implementation dependent.
errors points to an illegal address. The reliable detection of this error is implementation dependent.
count is less than 0.
count exceeds the maximum value (as returned by
A ukid refers to a non-existent kernel thread.
postwait(2)