This procedure shows how to set a value for an environment variable in the environment where processes started by the service will run.
The example in this procedure shows how to modify cron environment variables to help with debugging.
The following output shows that the cron service is online and a cron process is running.
$ svcs -p cron STATE STIME FMRI online 10:24:05 svc:/system/cron:default 10:24:05 1089 cron
The setenv subcommand sets an environment variable for the environment where a process started by a service or service instance will run.
Use the following command to check the current values of the environment variables you want to set:
$ pargs -e `pgrep -f /usr/sbin/cron`
The environment variables that are set in this example do not have any current values.
The following commands set the UMEM_DEBUG and LD_PRELOAD environment variables for the /usr/sbin/cron process started by the svc:/system/cron:default service instance:
$ svccfg -s system/cron:default setenv UMEM_DEBUG default $ svccfg -s system/cron:default setenv LD_PRELOAD libumem.so
Changing an environment variable value requires a restart as well as a refresh to take effect.
$ svcadm refresh system/cron:default $ svcadm restart system/cron:default
The following output shows that the service has been restarted, the process has a new process ID, and the two environment variables are set for that process environment.
$ svcs -p cron STATE STIME FMRI online 9:24:39 svc:/system/cron:default 9:24:39 5601 cron $ svcprop -g method -p environment system/cron:default start/environment astring LD_PRELOAD=libumem.so UMEM_DEBUG=default $ pargs -e `pgrep -f /usr/sbin/cron` 5601: /usr/sbin/cron envp[0]: LOGNAME=root envp[1]: LD_PRELOAD=libumem.so envp[2]: PATH=/usr/sbin:/usr/bin envp[3]: SMF_FMRI=svc:/system/cron:default envp[4]: SMF_METHOD=start envp[5]: SMF_RESTARTER=svc:/system/svc/restarter:default envp[6]: SMF_ZONENAME=global envp[7]: UMEM_DEBUG=default
See also
The unsetenv subcommand unsets an environment variable for a process started by a service or service instance.