Hi all!
I need a little help with an imbedded fuction I am trying to write. What I am trying to do is go to a series of hosts and get the contents of an XML file, storing some of the data, along with the name of the host it was gathered from. My intent is to store this in an array for later... (1 Reply)
Hi,
I would like to use a power function in Bash in an awk '{ } .
e.g pow(2,3)=8
Any suggestion? I try to find online resources but most of them stated by using BC.
Please advise. Thanks. (3 Replies)
I want to have a function with a similar interface:
search *.cpp asdf
that will search recursively all directories for *.cpp file, containing line 'asdf' inside. I tried this:
function search { find . -name "$1" | xargs grep -li $2; }
But it doesn't work all the time. For example, if i run it... (3 Replies)
I need to detect the number of pages in a print job when it is available so I can warn users when they try to print a report much larger than they expected. Sometimes they are trying to print 1000 page reports when they thought they were getting a 10 page report.
Under linux I am scanning the... (5 Replies)
Hey everyone.
I am currently testing my first function based BASH script. The ultimate goal is going to be moving logs from point A to point B (or if B is down, to point C).
Part of this involves the following function:
function testAlive{
ping -c 1 -q $1
}
Now when I run ping -c... (1 Reply)
This is probably common knowledge to the professionals but not so much for amateurs like
myself.
This is a code snippet for the equivalent of BASIC's...
LET char$=INKEY$
As the timeout parameter cannot be less than 1 second then this is the only limitation...
It is a single line... (5 Replies)
I need to add a selection within the bash function below and am having some trouble doing so.
phox2b() {
printf "\n\n"
printf "What is the id of the patient getting Phox2B analysis : "; read id
printf "Is this an intronic variant? Y/N "; read match_choice
case... (5 Replies)
I am putting this thread to shell-threads, because it is about how to make a function work properly. I need a hint for declaring a function right, it has been more than a year I did not work that straight with bash.
So my aim is to turn off the eth0 (as it would be in linux, and bge0 in bsd ),... (2 Replies)
Hello guys :)
I've a some issue with a function which use the bash colors in my script.
An example :
#!/bin/bash
set -x
log_in(){
host="srv1"
remote_files="log/"
LOG_FILE="logfile"
green='\033]; then
color_in_red=("${red}"$2"${none}")
echo -e... (2 Replies)
Discussion started by: Arnaudh78
2 Replies
LEARN ABOUT MOJAVE
osspinlockunlock
SPINLOCK_DEPRECATED(3) BSD Library Functions Manual SPINLOCK_DEPRECATED(3)NAME
OSSpinLockTry, OSSpinLockLock, OSSpinLockUnlock -- deprecated atomic spin lock synchronization primitives
SYNOPSIS
#include <libkern/OSAtomic.h>
bool
OSSpinLockTry(OSSpinLock *lock);
void
OSSpinLockLock(OSSpinLock *lock);
void
OSSpinLockUnlock(OSSpinLock *lock);
DESCRIPTION
These are deprecated interfaces for userspace spinlocks, provided for compatibility with legacy code. These interfaces should no longer be
used, particularily in situations where threads of differing priorities may contend on the same spinlock.
The interfaces in <os/lock.h> should be used instead in cases where a very low-level lock primitive is required. In general however, using
higher level synchronization primitives such as those provided by the pthread or dispatch subsystems are preferred.
The OSSpinLock operations use memory barriers to synchronize access to shared memory protected by the lock. Preemption is possible while the
lock is held.
OSSpinLock is an integer type. The convention is that unlocked is zero, and locked is nonzero. Locks must be naturally aligned and cannot
be in cache-inhibited memory.
OSSpinLockLock() will spin if the lock is already held, but employs various strategies to back off. Because it can spin, it will generally be
less cpu and power efficient than other synchronization primitives.
OSSpinLockTry() immediately returns false if the lock was held, true if it took the lock. It does not spin.
OSSpinLockUnlock() unconditionally unlocks the lock by zeroing it.
RETURN VALUES
OSSpinLockTry() returns true if it took the lock, false if the lock was already held.
SEE ALSO atomic(3), atomic_deprecated(3)Darwin May 26, 2004 Darwin