ipsvd(7) [debian man page]

ipsvd(7)						 Miscellaneous Information Manual						  ipsvd(7)

NAME

       ipsvd - Internet protocol service daemon

SYNOPSIS

       ipsvd [-hp] [-l name] [-u user] [-i dir|-x cdb] [-t sec] host port prog

DESCRIPTION

       An implementation of an internet protocol service daemon provides the command line interface as shown in SYNOPSIS above (additional options
       are possible), and supports pre-defined instructions for handling connections through files in a instructions directory, and through a con-
       stant database, as described in ipsvd-instruct(5).

       Currently  there  are two implementations of an internet protocol service daemon: a TCP/IP service daemon, tcpsvd(8), and an UDP/IP service
       daemon, udpsvd(8).  More internet protocol service daemons may appear in the future.

OPTIONS

       -i dir read instructions for handling new connections from the instructions directory dir.  See ipsvd-instruct(5) for details.

       -x cdb read instructions for handling new connections from the constant database cdb.  The constant database normally is  created  from	an
	      instructions directory by running ipsvd-cdb(8).

       -t sec timeout.	 This  option  only  takes effect if the -i option is given.  While checking the instructions directory, check the time of
	      last access of the file that matches the clients address or hostname if any, discard and remove  the  file  if  it  wasn't  accessed
	      within  the last sec seconds; ipsvd does not discard or remove a file if the user's write permission is not set, for those files the
	      timeout is disabled.  Default is 0, which means that the timeout is disabled.

       -l name
	      local hostname.  Do not look up the local hostname in DNS, but use name as hostname.

       -u [:]user[:group]
	      drop permissions.  Set uid and gid to the user's uid and gid, as found in /etc/passwd, before running prog.  If user is followed	by
	      a  colon and a group, set the gid to group's gid, as found in /etc/group, instead of user's gid.	If group consists of a colon-sepa-
	      rated list of group names, set the group ids of all listed groups.  If user is prefixed with a colon, the user and all  group  argu-
	      ments  are  interpreted as uid and gids respectively, and not looked up in the password or group file.  All supplementary groups are
	      removed.

       -h     Look up the client's hostname in DNS.

       -p     paranoid.  After looking up the client's hostname in DNS, look up the IP addresses in DNS for that hostname, and	forget	about  the
	      hostname if none of the addresses match the client's IP address.	You should set this option if you use hostname based instructions.
	      The -p option implies the -h option.

SIGNALS

       If an ipsvd receives a TERM signal, it exists with 0.

SEE ALSO

       tcpsvd(8), sslsvd(8), udpsvd(8), ipsvd-instruct(5), ipsvd-cdb(8)

       http://smarden.org/ipsvd/

AUTHOR

       Gerrit Pape <pape@smarden.org>

																	  ipsvd(7)

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

NAME

       chpst - runs a program with a changed process state

SYNOPSIS

       chpst  [-vP012]	[-u user] [-U user] [-b argv0] [-e dir] [-/ root] [-n inc] [-l|-L lock] [-m bytes] [-d bytes] [-o n] [-p n] [-f bytes] [-c
       bytes] prog

DESCRIPTION

       prog consists of one or more arguments.

       chpst changes the process state according to the given options, and runs prog.

OPTIONS

       -u [:]user[:group]
	      setuidgid.  Set uid and gid to the user's uid and gid, as found in /etc/passwd.  If user is followed by a colon and a group, set the
	      gid  to  group's	gid,  as  found in /etc/group, instead of user's gid.  If group consists of a colon-separated list of group names,
	      chpst sets the group ids of all listed groups.  If user is prefixed with a colon, the user and all group arguments  are  interpreted
	      as uid and gids respectivly, and not looked up in the password or group file.  All initial supplementary groups are removed.

       -U [:]user[:group]
	      envuidgid.   Set the environment variables $UID and $GID to the user's uid and gid, as found in /etc/passwd.  If user is followed by
	      a colon and a group, set $GID to the group's gid, as found in /etc/group, instead of user's gid.	If user is prefixed with a  colon,
	      the user and group arguments are interpreted as uid and gid respectivly, and not looked up in the password or group file.

       -b argv0
	      argv0.  Run prog with argv0 as the 0th argument.

       -e dir envdir.	Set  various  environment variables as specified by files in the directory dir: If dir contains a file named k whose first
	      line is v, chpst removes the environment variable k if it exists, and then adds the environment variable k with the  value  v.   The
	      name  k  must not contain =.  Spaces and tabs at the end of v are removed, and nulls in v are changed to newlines.  If the file k is
	      empty (0 bytes long), chpst removes the environment variable k if it exists, without adding a new variable.

       -/ root
	      chroot.  Change the root directory to root before starting prog.

       -n inc nice.  Add inc to the nice(2) value before starting prog.  inc must be an integer, and may start with a minus or plus.

       -l lock
	      lock.  Open the file lock for writing, and obtain an exclusive lock on it.  lock will be created if it does not exist.  If  lock	is
	      locked by another process, wait until a new lock can be obtained.

       -L lock
	      The same as -l, but fail immediately if lock is locked by another process.

       -m bytes
	      limit  memory.   Limit  the  data segment, stack segment, locked physical pages, and total of all segment per process to bytes bytes
	      each.

       -d bytes
	      limit data segment.  Limit the data segment per process to bytes bytes.

       -o n   limit open files.  Limit the number of open file descriptors per process to n.

       -p n   limit processes.	Limit the number of processes per uid to n.

       -f bytes
	      limit output size.  Limit the output file size to bytes bytes.

       -c bytes
	      limit core size.	Limit the core file size to bytes bytes.

       -v     verbose.	Print verbose messages to standard error.  This includes warnings about limits unsupported by the system.

       -P     pgrphack.  Run prog in a new process group.

       -0     Close standard input before starting prog.

       -1     Close standard output before starting prog.

       -2     Close standard error before starting prog.

EXIT CODES

       chpst exits 100 when called with wrong options.	It prints an error message and exits 111 if it has trouble  changing  the  process  state.
       Otherwise its exit code is the same as that of prog.

EMULATION

       If  chpst  is called as envdir, envuidgid, pgrphack, setlock, setuidgid, or softlimit, it emulates the functionality of these programs from
       the daemontools package respectively.

SEE ALSO

       sv(8), runsv(8), setsid(2), runit(8), runit-init(8), runsvdir(8), runsvchdir(8)

	http://smarden.org/runit/
	http://cr.yp.to/daemontools.html

AUTHOR

       Gerrit Pape <pape@smarden.org>

																	  chpst(8)