Developer's Daily | Unix by Example |
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getsid ? get session ID |
#include <unistd.h> pid_t getsid(pid_t pid); |
getsid(0) returns the session ID of the calling process. getsid(p) returns the session ID of the process with process ID p. |
On error, ?1 will be returned. The only error which can happen is ESRCH, when no process with process ID p was found. |
SVr4, which documents an additional EPERM error condition. |
setsid(2) |