/asp-assignment2

Primary LanguageC

prctree

The prctree C program searches for a specified process in the process tree rooted at a given process and outputs information based on the input parameters.

Usage

prctree [root_process] [process_id] [OPTION]

root_process is the PID of a process that is a descendant of a current BASH process. process_id is the PID of a process that is a descendant of a current BASH process.

OPTION can be one of the following:

  1. -c lists the PIDs of all the child processes (immediate descendants) of process_id
  2. -s lists the PID and PPID of all the sibling processes of process_id
  3. -gp lists the PID of the grandparent of process_id
  4. -gc lists the PIDs and PPIDs of all the grandchildren of process_id
  5. -z prints if process_id is DEFUNCT/NOT DEFUNCT
  6. -zl lists the PIDs of all the child processes of process_id that are currently in the defunct state

ztree

The ztree C program searches for defunct processes in the process tree rooted at a specified process and forcefully terminates the parent processes based on the input parameters.

Usage

ztree [root_process] [OPTION1] [OPTION2]

root_process is the PID of a process that is a descendant of a current BASH process.

OPTION1 can be one of the following:

  1. -t forcefully terminates parent processes (whose elapsed time is greater than PROC_ELTIME) of all the defunct processes in the process tree rooted at root_process
  2. -b forcefully terminates all the processes in the process tree rooted at root_process that have NO_OF_DFCS defunct child processes.

OPTION2 can be used with -t and -b options:

  1. PROC_ELTIME is the elapsed time of the process in minutes since it was created (>=1)
  2. NO_OF_DFCS is the number of defunct child processes (>=1)