pid

PDL::API (1p)        - making piddles from Perl and C/XS code
PDL::Indexing (1p)   - how to index piddles.
PDL::API (1p)        - making piddles from Perl and C/XS code
PDL::Indexing (1p)   - how to index piddles.
getpid (2)           - get process identification
getppid (2)          - get process identification
mysql_waitpid (1)    - Waits a specified amount of seconds for a PID to terminate.
pidof (8)            - find the process ID of a running program.
waitpid (2)          - wait for process termination