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Give us your poor, your tired, your huddled Admins... War Stories
Post 30639 by Kelam_Magnus on Thursday 24th of October 2002 04:27:44 PM
10-24-2002
Give us your poor, your tired, your huddled Admins... War Stories
I have been toying with the idea of posting a thread asking for your dumbest mistakes so that we may all learn from each other.
"A smart man learns from his own mistakes,
A wise man learns from others' mistakes"
I think I will start us off. I haven't had too many that were really bad, but here goes. I was playing around on a box as ROOT when I was looking in a certain directory to see what scripts where there.
I was catting them to look but I inadvertently executed one of them when I deleted the cat and left only the command and hit enter by mistake. I didn't notice my handywork right away though. About 15 minutes later, people called me saying they can't login. Anyway, 3 hours later I finally figured out that when I exe that script it changes the permissionsn on your home directory to 444. Well, for me that was /.
Once I fixed that everything was fine.
I had 4 hours of downtime charged to OE, operator error. BTW, this was on a production system at work! Doh!!!
"A smart man learns from his own mistakes,
A wise man learns from others' mistakes"
I think I will start us off. I haven't had too many that were really bad, but here goes. I was playing around on a box as ROOT when I was looking in a certain directory to see what scripts where there.
I was catting them to look but I inadvertently executed one of them when I deleted the cat and left only the command and hit enter by mistake. I didn't notice my handywork right away though. About 15 minutes later, people called me saying they can't login. Anyway, 3 hours later I finally figured out that when I exe that script it changes the permissionsn on your home directory to 444. Well, for me that was /.
Once I fixed that everything was fine.I had 4 hours of downtime charged to OE, operator error. BTW, this was on a production system at work! Doh!!!
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LEARN ABOUT DEBIAN
pthread_kill
PTHREAD_KILL(3) Linux Programmer's Manual PTHREAD_KILL(3) NAME
pthread_kill - send a signal to a thread SYNOPSIS
#include <signal.h> int pthread_kill(pthread_t thread, int sig); Compile and link with -pthread. DESCRIPTION
The pthread_kill() function sends the signal sig to thread, a thread in the same process as the caller. The signal is asynchronously directed to thread. If sig is 0, then no signal is sent, but error checking is still performed; this can be used to check for the existence of a thread ID. RETURN VALUE
On success, pthread_kill() returns 0; on error, it returns an error number, and no signal is sent. ERRORS
EINVAL An invalid signal was specified. ESRCH No thread with the ID thread could be found. CONFORMING TO
POSIX.1-2001. NOTES
Signal dispositions are process-wide: if a signal handler is installed, the handler will be invoked in the thread thread, but if the dispo- sition of the signal is "stop", "continue", or "terminate", this action will affect the whole process. SEE ALSO
kill(2), sigaction(2), sigpending(2), pthread_self(3), pthread_sigmask(3), raise(3), pthreads(7), signal(7) COLOPHON
This page is part of release 3.44 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 2012-08-19 PTHREAD_KILL(3)