Ps –efx | grep java6

UNIX for Beginners Q & A
1

what does the below command do

ps �efx | grep java6

Another question, what is crontab?

2

ps lists processes on the system, the -efx options extend the scope of target processes, details c.f. man ps . grep then selects only those entries that contain "java6" - including its own entry.

cron is the "daemon to execute scheduled commands" (c.f. man cron ). crontab is

  • the (per user) "tables for driving cron" ( man crontab ) with scheduled commands
    OR
  • the command to maintain those. Edit tables with crontab -e .