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readproctitle(8) - phpMan

Command: man perldoc info search(apropos)  

readproctitle(8)                     System Manager's Manual                     readproctitle(8)

       readproctitle - maintains an automatically rotated log in memory for inspection by ps(1).

       readproctitle is available in daemontools 0.75 and above.

       readproctitle L D

       L  consists  of  any  number  of arguments.  D is one argument consisting of at least five

       readproctitle reads data into the end of D, shifting D to the  left  to  make  room.  This
       means  that the most recent data is visible to process-listing tools such as ps(1).  read‐
       proctitle always leaves three dots at the left of D.

       For example, if

        readproctitle io errors: ....................

       reads the data

        fatal error xyz
        warning abc

       then its command-line arguments change to

        readproctitle io errors: ... xyz!warning abc!

       with a newline character in place of each !. Process-listing tools typically show the new‐
       line character as ? or \n.

       readproctitle exits when it reaches the end of input.

       Beware  that most implementations of ps(1) have small argument-length limits. These limits
       apply to the total length of readproctitle L D.  I have not seen a  system  with  a  limit
       below 512 bytes.

       supervise(8),  svc(8),  svok(8),  svstat(8),  svscanboot(8),  svscan(8),  fghack(8),  pgr‐
       phack(8), multilog(8), tai64n(8), tai64nlocal(8), setuidgid(8),  envuidgid(8),  envdir(8),
       softlimit(8), setlock(8), ps(1)



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