Return codes of "zabbix_agentd"

[just2blue4u]

I have built a script to untar, configure, make, install ... my zabbix agents on servers.
In this script, i do "zabbix_agentd -t agent.version" and want to ask if the command returned without errors:

zabbix_agentd -t agent.version
[ $? == 255 ] && sleep 3 || exit

Is 255 the correct return value if the command was executed correctly, or which value should be returned?

Is there a list of the different return codes?

[xaitax]

[xai@w00t bin]# zabbix_agentd -t; echo $?
zabbix_agentd: option requires an argument -- t
usage: zabbix_agentd [-vhp] [-c <file>] [-t <metric>]
255

You see, 255 is a FAILURE return code.
Normally - I didn't test at all - `0' should have been returned, if command was successfull.

- xai

[just2blue4u]

"0" was, what i was expecting first, too. But i got back the "255" after a correct agent.version check. So this code has multiple meanings?!

I'm sorry, this doesn't help me...

[xaitax]

Uhm, "0" is correct return-value.

[xai@w00t bin]# /etc/init.d/zabbix_agentd stop
Shutting down zabbix_agentd:                               [  OK  ]
[xai@w00t bin]# ./zabbix_agentd; echo $?
0
[xai@w00t bin]# ps auxf | grep zabbix_agentd | grep -v grep
zabbix   30176  0.0  0.0  2004  900 ?        SN   13:12   0:00 ./zabbix_agentd
zabbix   30177  0.0  0.0  2028  768 ?        SN   13:12   0:00  \_ ./zabbix_agentd
zabbix   30178  0.0  0.0  2028  764 ?        SN   13:12   0:00  \_ ./zabbix_agentd
zabbix   30179  0.0  0.0  2028  772 ?        SN   13:12   0:00  \_ ./zabbix_agentd
zabbix   30180  0.0  0.0  2020  748 ?        SN   13:12   0:00  \_ ./zabbix_agentd
zabbix   30181  0.0  0.0  2072  712 ?        SN   13:12   0:00  \_ ./zabbix_agentd
[xai@w00t bin]#

Version must be a "special" status. If you want to know how which reply results, have a look into the sources.

- xai

[just2blue4u]

return codes w/o success-/errorinformation

I can confirm the behaviour you posted.
But i need the returncodes of "zabbix_agentd -t <item>".

Look at this:

[root@dori ~]# zabbix_agentd -t agent.version; echo $?
agent.version                                 [s|1.1]
255
[root@dori ~]# zabbix_agentd -t system.uptime; echo $?
system.uptime                                 [u|2310324]
255
[root@dori ~]# zabbix_agentd -t system.cpu.intr; echo $?
system.cpu.intr                               [u|1152053400]
255
usage: zabbix_agentd [-vhp] [-c <file>] [-t <metric>]
255
[root@dori ~]# zabbix_agentd -t foobar; echo $?
foobar                                        [m|ZBX_NOTSUPPORTED]
255

According to this tests, The return code of "zabbix_agentd", provided by "$?" doesn't seem to provide any information about success/failure.
Sorry, i can't believe that...