getpgrp()--Get Process Group ID

 #include <sys/types.h>   
 #include <unistd.h>

 pid_t getpgrp(void);

The getpgrp() function returns the process group ID of the calling process.

Parameters

None

Authorities

None.

Return Value

Error Conditions

The getpgrp() function is always successful and does not return an error.

Usage Notes

The getpgrp() function enables a process for signals if the process is not already enabled for signals. For details, see Qp0sEnableSignals()--Enable Process for Signals.

Related Information

• The <sys/types.h> file (see Header Files for UNIX-Type Functions)
  
  
• The <unistd.h> file (see Header Files for UNIX-Type Functions)
  
  
• Qp0wGetPgrp()--Get Process Group ID

Example

See Code disclaimer information for information pertaining to code examples.

For an example of using this function, see the child program in Using the Spawn Process and Wait for Child Process APIs