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Shell Programming and Scripting
[Solved] Unable to mailx new $pid for a script restart
Post 302817999 by olyanderson on Thursday 6th of June 2013 06:46:11 PM
06-06-2013
thanks for the response, i appreciate it.
welp the first thing is, i check if the other batch is running,
if it is NOT running $pid="" (empty) which means there is no pid running with that grep, THEN, restart the process, then exit.
If it is running, the current or new pid started moments ago with above NOT statement, THEN, simply do nothing, echo "running", no log needed.
If it is NOT running, restart, grab the NEW $pid and email that new pid with mailx, AND echo the restarted to the log file.
everything is a go, perms wise, this script restarts the dead script. but it hangs, i want it to ALSO exit out with zero exit status and recheck via crontab every 1 min. this is a HA server, and needs constant babying lol. it doesn't cry much, but when it does, people lose jobs.
thanks for your help again, i appreciate it.
anymore input, just ask
welp the first thing is, i check if the other batch is running,
if it is NOT running $pid="" (empty) which means there is no pid running with that grep, THEN, restart the process, then exit.
If it is running, the current or new pid started moments ago with above NOT statement, THEN, simply do nothing, echo "running", no log needed.
If it is NOT running, restart, grab the NEW $pid and email that new pid with mailx, AND echo the restarted to the log file.
everything is a go, perms wise, this script restarts the dead script. but it hangs, i want it to ALSO exit out with zero exit status and recheck via crontab every 1 min. this is a HA server, and needs constant babying lol. it doesn't cry much, but when it does, people lose jobs.
thanks for your help again, i appreciate it.
anymore input, just ask
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LEARN ABOUT REDHAT
uuidd
UUIDD(8) System Administration UUIDD(8) NAME
uuidd - UUID generation daemon SYNOPSIS
uuidd [options] DESCRIPTION
The uuidd daemon is used by the UUID library to generate universally unique identifiers (UUIDs), especially time-based UUIDs, in a secure and guaranteed-unique fashion, even in the face of large numbers of threads running on different CPUs trying to grab UUIDs. OPTIONS
-d, --debug Run uuidd in debugging mode. This prevents uuidd from running as a daemon. -F, --no-fork Do not daemonize using a double-fork. -k, --kill If currently a uuidd daemon is running, kill it. -n, --uuids number When issuing a test request to a running uuidd, request a bulk response of number UUIDs. -P, --no-pid Do not create a pid file. -p, --pid path Specify the pathname where the pid file should be written. By default, the pid file is written to /run/uuidd/uuidd.pid. -q, --quiet Suppress some failure messages. -r, --random Test uuidd by trying to connect to a running uuidd daemon and request it to return a random-based UUID. -S, --socket-activation Do not create a socket but instead expect it to be provided by the calling process. This implies --no-fork and --no-pid. This option is intended to be used only with systemd(1). It needs to be enabled with a configure option. -s, --socket path Make uuidd use this pathname for the unix-domain socket. By default, the pathname used is /run/uuidd/request. This option is pri- marily for debugging purposes, since the pathname is hard-coded in the libuuid library. -T, --timeout number Make uuidd exit after number seconds of inactivity. -t, --time Test uuidd by trying to connect to a running uuidd daemon and request it to return a time-based UUID. -V, --version Output version information and exit. -h, --help Display help screen and exit. EXAMPLE
Start up a daemon, print 42 random keys, and then stop the daemon: uuidd -p /tmp/uuidd.pid -s /tmp/uuidd.socket uuidd -d -r -n 42 -s /tmp/uuidd.socket uuidd -d -k -s /tmp/uuidd.socket AUTHOR
The uuidd daemon was written by Theodore Ts'o <tytso@mit.edu>. SEE ALSO
uuid(3), uuidgen(1) AVAILABILITY
The uuidd daemon is part of the util-linux package and is available from the Linux Kernel Archive <https://www.kernel.org/pub/linux/utils /util-linux/>. util-linux July 2014 UUIDD(8)