CODEWITHSUNDEEP
linux
vrtx54234
vrtx54234

Reputation: 2316

What is text after colon in process name in ps

What is the text after colon in a process name in the ps listing below? I know what the text means but I am looking for where that text is specified in a process.

6965 ?        Ss     0:00 nginx: master process nginx
8213 ?        S      0:01  \_ nginx: worker process
8214 ?        S      0:01  \_ nginx: worker process
8215 ?        S      0:01  \_ nginx: worker process
8216 ?        S      0:00  \_ nginx: worker process

Upvotes: 1

Views: 574

Answers (1)

Felix Yan
Felix Yan

Reputation: 15259

Take a look at prctl, PR_SET_NAME is the right system call you're looking for.

Copied from that page:

   PR_SET_NAME (since Linux 2.6.9)
          Set the name of the calling thread, using the value in the
          location pointed to by (char *) arg2.  The name can be up to
          16 bytes long, and should be null-terminated if it contains
          fewer bytes.  This is the same attribute that can be set via
          pthread_setname_np(3) and retrieved using
          pthread_getname_np(3).  The attribute is likewise accessible
          via /proc/self/task/[tid]/comm, where tid is the name of the
          calling thread.

Upvotes: 1

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