So i am receiving from a script this prompt :
I need to get the list of my error type
Basicly i need to get distinct value between 'critical'; and the third ';'
was
tibco
mirroring
in this exemple, but i can have lot of more.
Can i do this with one command, or should i put all in one table and compare every value ?
Bash shell. I'm trying to filter a string taken from user input. I can replace one word at a time. This method supports regex, so is it possible to replace various words at a time?
STRING="Hello World! word1 word2";
FILTERED=${STRING/word1|word2/}; # Not working: replace 2 or more words ???
... (10 Replies)
I have a program to create a directory if not present. Here is the program.
FYI: Directory name format: YYYY_MM_DD
#!/bin/bash
date=`date +%Y_%m_%d`
presence=$(ls -lrt /TS_File/ | grep "$date" | awk '{print $9}')
if
then
mkdir /TS_File/$date
else
echo "Unable to Create... (5 Replies)
my question is , i want to get the distinct email address from the file which contains:
<Email address>|<file name>
/tmp/test.log
petercs@yahoo.com|sf1.pdf
sandycs@yahoo.com|sf2.pdf
davidcs@yahoo.com|sf3.pdf
davidcs@yahoo.com|sf4.pdf
i want to get the result like:
petercs@yahoo.com... (5 Replies)
Hello guys,
here is my problem:
I got a shell script which is called by an external piece of software, the external software is not under my control. The software passes data as an argument to my script like
./bla.sh 'service;1234567890;ok;hostname;some text here'
I need to pass the... (3 Replies)
In my script I'm retrieving a parameter through an API call. I need to trim some things out of the result so I can use it as a parameter to pass to another process. I've got it working but it's pretty kludgy and I'm hoping someone can help me with a better way.
This is the code that retrieves... (2 Replies)
I have an output file .dat. From this file i have to do a distinct of the ID using the sort uniq command in bash script. How can i do it? i found :
sort -u ${FILEOUT_DAT}
but i don't think is my solution because the id isn't specified.. is there other solution? (7 Replies)
Hy friends, I am newbie to bash scripting, can anyone explain how b=${a/23/BB} # Substitute "BB" for "23". this line converts "b" into string and and "d" into Integer. Thanks in advance (4 Replies)
If i'm given a string like "abc-def-1.2.3", how would I return "1"? I'm new to scripting and got stumped on this problem. Thanks in advance! (7 Replies)
Hi,
I am new in bash scripting. In my work, I provide support to several users and when I connect to their computers I use the same admin and password, so I am trying to create a script that will only ask me for the IP address and then connect to the computer without having me to type the user... (5 Replies)
Discussion started by: arcoa05
5 Replies
LEARN ABOUT FREEBSD
critical
CRITICAL_ENTER(9) BSD Kernel Developer's Manual CRITICAL_ENTER(9)NAME
critical_enter, critical_exit -- enter and exit a critical region
SYNOPSIS
#include <sys/param.h>
#include <sys/systm.h>
void
critical_enter(void);
void
critical_exit(void);
DESCRIPTION
These functions are used to prevent preemption in a critical region of code. All that is guaranteed is that the thread currently executing
on a CPU will not be preempted. Specifically, a thread in a critical region will not migrate to another CPU while it is in a critical
region. The current CPU may still trigger faults and exceptions during a critical section; however, these faults are usually fatal.
The critical_enter() and critical_exit() functions manage a per-thread counter to handle nested critical sections. If a thread is made
runnable that would normally preempt the current thread while the current thread is in a critical section, then the preemption will be
deferred until the current thread exits the outermost critical section.
Note that these functions are not required to provide any inter-CPU synchronization, data protection, or memory ordering guarantees and thus
should not be used to protect shared data structures.
These functions should be used with care as an infinite loop within a critical region will deadlock the CPU. Also, they should not be inter-
locked with operations on mutexes, sx locks, semaphores, or other synchronization primitives. One exception to this is that spin mutexes
include a critical section, so in certain cases critical sections may be interlocked with spin mutexes.
HISTORY
These functions were introduced in FreeBSD 5.0.
BSD October 5, 2005 BSD