This is the output of the command ps -ef | grep java on one of our machines.jboss     1965  1935  1  2013 ?        04:41:05 java XXXXXXXXXXXXXXXXX  jboss     2170  2141  0  2013 ?        00:42:57 java XXXXXXXXXXXXXXXXXjboss     2708  2679  7  2013 ?        1-04:38:51 java XXXXXXXXXXXXXXXXXtomcat    6845     1  1  2013 ?        03:28:03 XXXXXXXXXXXXXXXXXjboss    24651 24622  0  2013 ?        03:03:27 XXXXXXXXXXXXXXXXXtomcat   32533     1  0  2013 ?        00:12:08 XXXXXXXXXXXXXXXXX(XXXs added to hide the guilty!)What is the meaning of the 1- on the third line?
What is the meaning of 1- in the output of ps?
ps
That means one day + 4:38 hours of cumulative CPU time that has been used  by this process.ExampleIt's helpful to look at the column headers to understand the values.$ ps -ef | head -5UID        PID  PPID  C STIME TTY          TIME CMDroot         1     0  0  2013 ?        00:00:01 /sbin/initroot         2     0  0  2013 ?        00:00:00 [kthreadd]root         3     2  0  2013 ?        00:00:00 [migration/0]root         4     2  0  2013 ?        00:00:10 [ksoftirqd/0]This bit from the ps man page explains the time format for that column.By default, ps selects all processes with the same effective user ID (euid=EUID) as the current user and associated with the same terminal as the invoker.  It displays the process ID (pid=PID), the terminal associated with the process (tname=TTY), the cumulated CPU time in [DD-]hh:mm:ss format (time=TIME), and the executable name (ucmd=CMD).  Output is unsorted by default.The bit you're asking about is this:[DD-]hh:mm:ss format (time=TIME)The DD- is the 1- so they're days.