Shell script newbie- how to generate service log from shell script
Hi,
I am totally a newbie to any programming languages and I just started an entry level job in an IT company. One of my recent tasks is to create a script that is able to show the log file of linux service (i.e. ntpd service)
lets say, if I run my script ./test.sh, the output should be similar to :
I dont know if I didnt get the right requirement or something, I found a lot of scripts online but none of them worked for my case. One thing that I don't understand is, do I firstly need to have an existing .log file that has all the ntpd service history? I check var/log/ntpstats but there is no log files.
I would really appreciate if anyone could give me some ideas, if you need any clarifications please let me know.
Thanks very much
xiao
Last edited by vbe; 03-02-2019 at 04:42 AM..
Reason: code tags
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Discussion started by: arjun_arippa
0 Replies
LEARN ABOUT DEBIAN
msvc
msvc(8) System Manager's Manual msvc(8)NAME
msvc - control minit
SYNOPSIS
msvc [ -[uodpchaitko] ] [ -P pid ] service [...]
DESCRIPTION
msvc is the management interface to minit. service is the service directory name relative to /etc/minit. Starting with minit 0.9 you can
also include /etc/minit/ in the service name.
OPTIONS
If no option is given, msvc will just print a small diagnostic message to stdout, saying if the service is up, down or finished, which PID
it has if it is up, and for how long it has been in this state.
-u Up. If the service is not running, start it. If the service stops, restart it.
-o Once. If the service is not running, start it. If the service stops, do not restart it.
-d Down. If the service is running, send it a TERM signal and then a CONT signal. After it stops, do not restart it.
-p Pause. Send the service a STOP signal.
-c Continue. Send the service a CONT signal.
-h Hangup. Send the service a HUP signal.
-a Alarm. Send the service an ALRM signal.
-i Interrupt. Send the service an INT signal.
-t Terminate. Send the service a TERM signal.
-k Terminate. Send the service a KILL signal.
-P pid
Set PID. Tell minit the PID of the service is really pid. This is useful for services that fork themselves in the background but put
their real PID in a file, typically called /var/run/service.pid. Used by pidfilehack.
-D service
Print dependencies. This will print all the names of all the services that were started because this services depended on them.
Please note that this is not done recursively (i.e. if default depends on qmail and qmail depends on log, this will print qmail, not
qmail/log. But msvc -D qmail will print qmail/log).
-H Print history. This will print the names of the ten least recently spawned processes. This is useful if you see a process looping
(initialization fails and minit is restarting it all the time).
RETURN CODES
Generally, msvc return zero if everything is OK or 1 on error (could not open /lib/minit/in or /lib/minit/out or there is no process with
the given name). In diagnostic mode, it will exit 0 if the service is up, 2 if it is down or 3 if it is finished.
SEE ALSO pidfilehack(8), svc(8)msvc(8)