Adding upstream version 23.7.upstream/23.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

8 files changed, 1356 insertions, 0 deletions

diff --git a/doc/Makefile.am b/doc/Makefile.am
new file mode 100644
index 0000000..a4783e5
--- /dev/null
+++ b/doc/Makefile.am
@@ -0,0 +1,11 @@
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index 0000000..e6a6904
--- /dev/null
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+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/doc/fuser.1 b/doc/fuser.1
new file mode 100644
index 0000000..37191c0
--- /dev/null
+++ b/doc/fuser.1
@@ -0,0 +1,310 @@
+.\"
+.\" Copyright 1993-2005 Werner Almesberger
+.\"           2005-2023 Craig Small
+.\" This program is free software; you can redistribute it and/or modify
+.\" it under the terms of the GNU General Public License as published by
+.\" the Free Software Foundation; either version 2 of the License, or
+.\" (at your option) any later version.
+.\"
+.TH FUSER 1 "2022-11-02" "psmisc" "User Commands"
+.SH NAME
+fuser \- identify processes using files or sockets
+.SH SYNOPSIS
+.ad l
+.B fuser
+.RB [ \-fuv ]
+.RB [ \-a | \-s ]
+.RB [ \-4 | \-6 ]
+.RB [ \-c | \-m | \-n
+.IR space ]
+.RB [ \ \-k
+.RB [ \-i ]
+.RB [ \-M ]
+.RB [ \-w ]
+.RB [ \-\c
+.IR SIGNAL ]
+]
+.IR name " ..."
+.br
+.B fuser \-l
+.br
+.B fuser \-V
+.ad b
+.SH DESCRIPTION
+.B fuser
+displays the PIDs of processes using the specified files or file
+systems.  In the default display mode, each file name is followed by a
+letter denoting the type of access:
+.PP
+.RS
+.PD 0
+.TP
+.B c
+current directory.
+.TP
+.B e
+executable being run.
+.TP
+.B f
+open file.
+.B f
+is omitted in default display mode.
+.TP
+.B F
+open file for writing.
+.B F
+is omitted in default display mode.
+.TP
+.B r
+root directory.
+.TP
+.B m
+mmap'ed file or shared library.
+.TP
+.B .
+Placeholder, omitted in default display mode.
+.PD
+.RE
+.LP
+.B fuser
+returns a non-zero return code if none of the specified files is
+accessed or in case of a fatal error.  If at least one access has been
+found,
+.B fuser
+returns zero.
+.PP
+In order to look up processes using TCP and UDP sockets, the
+corresponding name space has to be selected with the
+.B \-n
+option. By default
+.B fuser
+will look in both IPv6 and IPv4 sockets.  To change the default
+behavior, use the
+.B \-4
+and
+.B \-6
+options.  The socket(s) can be specified by the local and remote port,
+and the remote address.  All fields are optional, but commas in front
+of missing fields must be present:
+.PP
+.RI [ lcl_port ][,[ rmt_host ][,[ rmt_port ]]]
+.PP
+Either symbolic or numeric values can be used for IP addresses and port
+numbers.
+.PP
+.B fuser
+outputs only the PIDs to stdout, everything else is sent to stderr.
+.SH OPTIONS
+.TP
+.BR \-a ", " \-\-all
+Show all files specified on the command line.  By default, only files
+that are accessed by at least one process are shown.
+.TP
+.B \-c
+Same as \fB\-m\fR option, used for POSIX compatibility.
+.TP
+.B \-f
+Silently ignored, used for POSIX compatibility.
+.TP
+.BR \-k ", "\-\-kill
+Kill processes accessing the file.  Unless changed with
+.BI \- SIGNAL\/\c
+, SIGKILL is sent.
+An
+.B fuser
+process never kills itself, but may kill other
+.B fuser
+processes.  The effective user ID of the process executing
+.B fuser
+is set to its real user ID before attempting to kill.
+.TP
+.BR \-i ", " \-\-interactive
+Ask the user for confirmation before killing a process.
+This option is
+silently ignored if
+.B \-k
+is not present too.
+.TP
+.BR \-I ", " \-\-inode
+For the name space
+.B file
+let all comparisons be based on the inodes of the specified file(s)
+and never on the file names even on network based file systems.
+.TP
+.BR \-l ", " \-\-list\-signals
+List all known signal names.
+.TP
+.BI -m " NAME\fR, " "\-\-mount " NAME
+.I NAME
+specifies a file on a mounted file system or a block device that is
+mounted.  All processes accessing files on that file system are listed.
+If a directory is specified, it is automatically changed to
+.IR NAME /
+to use any file system that might be mounted on that directory.
+.TP
+.BR \-M ", " \-\-ismountpoint
+Request will be fulfilled only if
+.I NAME
+specifies a mountpoint.  This is an invaluable seat belt which prevents
+you from killing the machine if
+.I NAME
+happens to not be a filesystem.
+.TP
+.B \-w
+Kill only processes which have write access.  This option is silently
+ignored if
+.B \-k
+is not present too.
+.TP
+.BI \-n " NAMESPACE\fR, " "\-\-namespace " NAMESPACE
+Select a different name space.  The name spaces
+.B file
+(file names, the default),
+.B udp
+(local UDP ports), and
+.B tcp
+(local TCP ports) are supported.  For ports, either the port number or
+the symbolic name can be specified.  If there is no ambiguity, the
+shortcut notation
+.IB name / space
+(e.g.,
+.IB 80 / tcp \fR)
+can be used.
+.TP
+.BR \-s ", " \-\-silent
+Silent operation.
+.B  \-u
+and
+.B \-v
+are ignored in this mode.
+.B \-a
+must not be used with
+.BR \-s .
+.TP
+.BI \- SIGNAL
+Use the specified signal instead of SIGKILL when killing processes.
+Signals can be specified either by name (e.g.,
+.BR \-HUP )
+or by number (e.g.,
+.BR \-1 ).
+This option is silently ignored if the
+.B \-k
+option is not used.
+.TP
+.BR \-u ", " \-\-user
+Append the user name of the process owner to each PID.
+.TP
+.BR \-v ", " \-\-verbose
+Verbose mode.  Processes are shown in a
+.BR  ps -like
+style.  The fields PID, USER and COMMAND are similar to
+.BR ps .
+ACCESS shows how the process accesses the file.  Verbose mode will also
+show when a particular file is being accessed as a mount point, knfs
+export or swap file.  In this case
+.B kernel
+is shown instead of the PID.
+.TP
+.BR \-V ", " \-\-version
+Display version information.
+.TP
+.BR \-4 ", " \-\-ipv4
+Search only for IPv4 sockets.  This option must not be used with the
+.B \-6
+option and only has an effect with the tcp and udp namespaces.
+.TP
+.BR \-6 ", " \-\-ipv6
+Search only for IPv6 sockets.  This option must not be used with the
+.B \-4
+option and only has an effect with the tcp and udp namespaces.
+.SH FILES
+.TP
+/proc
+location of the proc file system
+.SH EXAMPLES
+.TP
+.B fuser \-km /home
+kills all processes accessing the file system /home in any way.
+.TP
+.BI "if fuser \-s /dev/ttyS1; then :; else " command "; fi"
+invokes
+.I command
+if no other process is using /dev/ttyS1.
+.TP
+.B fuser telnet/tcp
+shows all processes at the (local) TELNET port.
+.SH RESTRICTIONS
+Processes accessing the same file or file system several times in the
+same way are only shown once.
+.PP
+If the same object is specified several times on the command line, some
+of those entries may be ignored.
+.PP
+.B fuser
+may only be able to gather partial information unless run with
+privileges.  As a consequence, files opened by processes belonging to
+other users may not be listed and executables may be classified as
+mapped only.
+.PP
+.B fuser
+cannot report on any processes that it doesn't have permission to look
+at the file descriptor table for.  The most common time this problem
+occurs is when looking for TCP or UDP sockets when running
+.B fuser
+as a non-root user.  In this case
+.B fuser
+will report no access.
+.PP
+Installing
+.B fuser
+SUID root will avoid problems associated with partial information, but
+may be undesirable for security and privacy reasons.
+.PP
+.B udp
+and
+.B tcp
+name spaces, and UNIX domain sockets can't be searched with kernels
+older than 1.3.78.
+.PP
+Accesses by the kernel are only shown with the
+.B \-v
+option.
+.PP
+The
+.B \-k
+option only works on processes.  If the user is the kernel,
+.B fuser
+will print an advice, but take no action beyond that.
+.PP
+.B fuser
+will not see block devices mounted by processes in a different mount namespace.
+This is due to the device ID shown in the process' file descriptor table being
+from the process namespace, not fuser's; meaning it won't match.
+.SH BUGS
+.PP
+.B fuser \-m  /dev/sgX
+will show (or kill with the \fB\-k\fR flag) all processes,
+even if you don't have that device configured.  There may be other
+devices it does this for too.
+.PP
+The mount \fB\-m\fR option will match any file within the same device as the
+specified file, use the \fB\-M\fR option as well if you mean to specify only
+the mount point.
+.PP
+.B fuser
+will not match mapped files, such as a process' shared libraries if they are
+on a
+.BR btrfs (5)
+filesystem due to the device IDs being different for
+.BR stat (2)
+and \fI/proc/<PID>/maps\fR.
+.SH "SEE ALSO"
+.BR kill (1),
+.BR killall (1),
+.BR stat (2),
+.BR btrfs (5),
+.BR lsof (8),
+.BR mount_namespaces (7),
+.BR pkill (1),
+.BR ps (1),
+.BR kill (2).
diff --git a/doc/killall.1 b/doc/killall.1
new file mode 100644
index 0000000..3414066
--- /dev/null
+++ b/doc/killall.1
@@ -0,0 +1,178 @@
+.\"
+.\" Copyright 1993-2002 Werner Almesberger
+.\"           2002-2023 Craig Small
+.\" This program is free software; you can redistribute it and/or modify
+.\" it under the terms of the GNU General Public License as published by
+.\" the Free Software Foundation; either version 2 of the License, or
+.\" (at your option) any later version.
+.\"
+.TH KILLALL 1 "2023-06-17" "psmisc" "User Commands"
+.SH NAME
+killall \- kill processes by name
+.SH SYNOPSIS
+.ad l
+.B killall
+.RB [ \-Z , \ \-\-context
+.IR pattern ]
+.RB [ \-e , \ \-\-exact ]
+.RB [ \-g , \ \-\-process\-group ]
+.RB [ \-i , \ \-\-interactive ]
+.RB [ \-n , \ \-\-ns
+.IR PID ]
+.RB [ \-o , \ \-\-older\-than
+.IR TIME ]
+.RB [ \-q , \ \-\-quiet ]
+.RB [ \-r , \ \-\-regexp ]
+.RB [ \-s , \ \-\-signal
+.IR SIGNAL ,\ \fB\- \fISIGNAL\fR ]
+.RB [ \-u , \ \-\-user
+.IR user ]
+.RB [ \-v , \ \-\-verbose ]
+.RB [ \-w , \ \-\-wait ]
+.RB [ \-y , \ \-\-younger\-than
+.IR TIME ]
+.RB [ \-I , \ \-\-ignore-case ]
+.RB [ \-V , \ \-\-version ]
+.RB [ \-\- ]
+.IR name " ..."
+.br
+.B killall
+.BR \-l ", " \-\-list
+.br
+.B killall
+.BR \-V , \ \-\-version
+.ad b
+.SH DESCRIPTION
+.B killall
+sends a signal to all processes running any of the specified commands.
+If no signal name is specified, SIGTERM is sent.
+.PP
+Signals can be specified either by name (e.g.\&
+.B \-HUP
+or
+.BR \-SIGHUP )
+or by number (e.g.\&
+.BR \-1 )
+or by option
+.BR \-s .
+.PP
+If the command name is not regular expression (option
+.BR \-r )
+and contains a slash
+.RB ( / ),
+processes executing that particular file will be selected for killing,
+independent of their name.
+.PP
+.B killall
+returns a zero return code if at least one process has been killed for
+each listed command, or no commands were listed and at least one
+process matched the \fB\-u\fR and \fB\-Z\fR search criteria.
+.B killall
+returns non-zero otherwise.
+.PP
+A
+.B killall
+process never kills itself (but may kill other
+.B killall
+processes).
+.SH OPTIONS
+.IP "\fB\-e\fP, \fB\-\-exact\fP"
+Require an exact match for very long names.  If a command name is
+longer than 15 characters, the full name may be unavailable (i.e.  it
+is swapped out).  In this case,
+.B killall
+will kill everything that matches within the first 15 characters.  With
+.BR \-e ,
+such entries are skipped.
+.B killall
+prints a message for each skipped entry
+if
+.B \-v
+is specified in addition to
+.BR \-e .
+.IP "\fB\-I\fP, \fB\-\-ignore\-case\fP"
+Do case insensitive process name match.
+.IP "\fB\-g\fP, \fB\-\-process\-group\fP"
+Kill the process group to which the process belongs.  The kill signal
+is only sent once per group, even if multiple processes belonging to
+the same process group were found.
+.IP "\fB\-i\fP, \fB\-\-interactive\fP"
+Interactively ask for confirmation before killing.
+.IP "\fB\-l\fP, \fB\-\-list\fP"
+List all known signal names.
+.IP "\fB\-n\fP, \fB\-\-ns\fP"
+Match against the PID namespace of the given PID. The default is to match
+against all namespaces.
+.IP "\fB\-o\fP, \fB\-\-older\-than\fP"
+Match only processes that are older (started before) the time
+specified.  The time is specified as a float then a unit.  The units
+are s,m,h,d,w,M,y for seconds, minutes, hours, days, weeks, months and
+years respectively.
+.IP "\fB\-q\fP, \fB\-\-quiet\fP"
+Do not complain if no processes were killed.
+.IP "\fB\-r\fP, \fB\-\-regexp\fP"
+Interpret process name pattern as a POSIX extended regular expression, per
+.BR regex (3).
+.IP "\fB\-s\fP, \fB\-\-signal\fP, \fB\-\fISIGNAL\fP"
+Send this signal instead of SIGTERM.
+.IP "\fB\-u\fP, \fB\-\-user\fP"
+Kill only processes the specified user owns.  Command names are
+optional.
+.IP "\fB\-v\fP, \fB\-\-verbose\fP"
+Report if the signal was successfully sent.
+.IP "\fB\-V\fP, \fB\-\-version\fP"
+Display version information.
+.IP "\fB\-w\fP, \fB\-\-wait\fP"
+Wait for all killed processes to die.
+.B killall
+checks once per second if any of the killed processes still exist and
+only returns if none are left.  Note that
+.B killall
+may wait forever if the signal was ignored, had no effect, or if the
+process stays in zombie state.
+.IP "\fB\-y\fP, \fB\-\-younger\-than\fP"
+Match only processes that are younger (started after) the time
+specified.  The time is specified as a float then a unit.  The units
+are s,m,h,d,w,M,y for seconds, minutes, hours, days, weeks, Months and
+years respectively.
+.IP "\fB\-Z\fP, \fB\-\-context\fP"
+Specify security context: kill only processes having
+security context that match with given extended regular expression
+pattern.  Must precede other arguments on the command line.  Command
+names are optional.
+.SH FILES
+.TP
+/proc
+location of the proc file system
+.SH "KNOWN BUGS"
+Killing by file only works for executables that are kept open during
+execution, i.e. impure executables can't be killed this way.
+.PP
+Be warned that typing
+.B killall
+.I name
+may not have the desired effect on non-Linux systems, especially when
+done by a privileged user.
+.PP
+.B killall \-w
+doesn't detect if a process disappears and is replaced by a new process
+with the same PID between scans.
+.PP
+If processes change their name,
+.B killall
+may not be able to match them correctly.
+.PP
+.B killall
+has a limit of names that can be specified on the command line.  This
+figure is the size of an unsigned long integer multiplied by 8.  For most 32
+bit systems the limit is 32 and similarly for a 64 bit system the limit
+is usually 64.
+.SH "SEE ALSO"
+.BR kill (1),
+.BR fuser (1),
+.BR pgrep (1),
+.BR pidof (1),
+.BR pkill (1),
+.BR ps (1),
+.BR kill (2),
+.BR regex (3).
diff --git a/doc/peekfd.1 b/doc/peekfd.1
new file mode 100644
index 0000000..f14159f
--- /dev/null
+++ b/doc/peekfd.1
@@ -0,0 +1,64 @@
+.\"
+.\" Copyright 2007 Trent Waddington <trent.waddington@gmail.com>
+.\"
+.\" This program is free software; you can redistribute it and/or modify
+.\" it under the terms of the GNU General Public License as published by
+.\" the Free Software Foundation; either version 2 of the License, or
+.\" (at your option) any later version.
+.\"
+.TH PEEKFD 1 "2021-12-01" "psmisc" "User Commands"
+.SH NAME
+peekfd \- peek at file descriptors of running processes
+.SH SYNOPSIS
+.B peekfd 
+.RB [ \-8 , \-\-eight\-bit\-clean ]
+.RB [ \-n , \-\-no\-headers ]
+.RB [ \-c , \-\-follow ]
+.RB [ \-d , \-\-duplicates\-removed ]
+.RB [ \-V , \-\-version ]
+.RB [ \-h , \-\-help ]
+.I pid
+.RI [ fd ]
+.RI [ fd "] ..."
+.SH DESCRIPTION
+.B peekfd
+attaches to a running process and intercepts all reads and writes to
+file descriptors.  You can specify the desired file descriptor numbers
+or dump all of them.
+.SH OPTIONS
+.IP -8
+Do no post-processing on the bytes being read or written.
+.IP -n
+Do not display headers indicating the source of the bytes dumped.
+.IP -c
+Also dump the requested file descriptor activity in any new child
+processes that are created.
+.IP -d
+Remove duplicate read/writes from the output.  If you're looking at a
+tty with echo, you might want this.
+.IP -v
+Display a version string.
+.IP -h
+Display a help message.
+.SH FILES
+.BI /proc/ * /fd
+.RS
+Not used but useful for the user to look at to get good file descriptor
+numbers.
+.SH ENVIRONMENT
+None.
+.SH DIAGNOSTICS
+The following diagnostics may be issued on stderr:
+.TP
+.BI "Error attaching to pid " <PID>
+An unknown error occurred while attempted to attach to a process, you
+may need to be root.
+.SH BUGS
+Probably lots.  Don't be surprised if the process you are monitoring
+dies.
+.SH AUTHOR
+.MT trent.waddington@gmail.com
+Trent Waddington
+.ME
+.SH "SEE ALSO"
+.BR ttysnoop (8)
diff --git a/doc/prtstat.1 b/doc/prtstat.1
new file mode 100644
index 0000000..3a7aed6
--- /dev/null
+++ b/doc/prtstat.1
@@ -0,0 +1,40 @@
+.\"
+.\" Copyright 2009-2020 Craig Small
+.\"
+.\" This program is free software; you can redistribute it and/or modify
+.\" it under the terms of the GNU General Public License as published by
+.\" the Free Software Foundation; either version 2 of the License, or
+.\" (at your option) any later version.
+.\"
+.TH PRTSTAT 1 "2020-09-09" "psmisc" "User Commands"
+.SH NAME
+prtstat \- print statistics of a process
+.SH SYNOPSIS
+.ad l
+.B prtstat
+.RB [ \-r | \-\-raw ]
+.I pid
+.br
+.B prtstat
+.BR \-V | \-\-version
+.ad b
+.SH DESCRIPTION
+.B prtstat
+prints the statistics of the specified process.  This information comes
+from the
+.BI /proc/ pid /stat
+file.
+.SH OPTIONS
+.TP
+.BR \-r , \ \-\-raw
+Print the information in raw format.
+.TP
+.BR \-V , \ \-\-version
+Show the version information for
+.BR prtstat .
+.SH FILES
+.TP
+.BI /proc/ pid /stat
+source of the information
+.B prtstat
+uses.
diff --git a/doc/pslog.1 b/doc/pslog.1
new file mode 100644
index 0000000..5b6ec5a
--- /dev/null
+++ b/doc/pslog.1
@@ -0,0 +1,40 @@
+'\" t
+.\" (The preceding line is a note to broken versions of man to tell
+.\" them to pre-process this man page with tbl)
+.\" Man page for pwdx
+.\" Licensed under version 2 of the GNU General Public License.
+.\" Copyright 2015 Vito Mule’.
+.\" Based on the pwdx(1) man page by Nicholas Miell.
+.\"
+.TH PSLOG 1 "2020-09-09"Linux" "Linux User's Manual"
+.SH NAME
+pslog \- report current logs path of a process
+.SH SYNOPSIS
+.ad l
+.B pslog
+.IR pid " \&...\&"
+.br
+.B pslog \-V
+.ad b
+.SH DESCRIPTION
+The
+.B pslog
+command reports the current working logs of a process.
+.SH OPTIONS
+.TP
+.B \-V
+Display version information.
+.SH "SEE ALSO"
+.BR pgrep (1),
+.BR ps (1),
+.BR pwdx (1).
+.SH AUTHOR
+Vito Mule\(cq
+.MT mulevito@gmail.com
+.ME
+wrote
+.B pslog
+in 2015. Please send bug reports to
+.MT mulevito@gmail.com
+.ME .
+
diff --git a/doc/pstree.1 b/doc/pstree.1
new file mode 100644
index 0000000..8209cf5
--- /dev/null
+++ b/doc/pstree.1
@@ -0,0 +1,178 @@
+.\"
+.\" Copyright 1993-2002 Werner Almesberger
+.\"           2002-2021 Craig Small
+.\" This program is free software; you can redistribute it and/or modify
+.\" it under the terms of the GNU General Public License as published by
+.\" the Free Software Foundation; either version 2 of the License, or
+.\" (at your option) any later version.
+.\"
+.TH PSTREE 1 "2021-06-21" "psmisc" "User Commands"
+.SH NAME
+pstree \- display a tree of processes
+.SH SYNOPSIS
+.ad l
+.B pstree
+.RB [ \-a  , \ \-\-arguments ]
+.RB [ \-c  , \ \-\-compact\-not ]
+.RB [ \-C  , \ \-\-color\ \fIattr\fB ]
+.RB [ \-g  , \ \-\-show\-pgids ]
+.RB [ \-h  , \ \-\-highlight\-all  , \ \-H \fI\ pid\fB  \fR, \fB\ \-\-highlight\-pid\ \fIpid\fB \fR]
+.RB [ \-l  , \ \-\-long ]
+.RB [ \-n  , \ \-\-numeric\-sort ]
+.RB [ \-N  , \ \-\-ns\-sort\ \fIns\fB ]
+.RB [ \-p  , \ \-\-show\-pids ]
+.RB [ \-s  , \ \-\-show\-parents ]
+.RB [ \-S  , \ \-\-ns-changes ]
+.RB [ \-t  , \ \-\-thread-names ]
+.RB [ \-T  , \ \-\-hide-threads ]
+.RB [ \-u  , \ \-\-uid\-changes ]
+.RB [ \-Z  , \ \-\-security\-context ]
+.RB [ \-A  , \ \-\-ascii  , \ \-G  , \ \-\-vt100  , \ \-U  , \ \-\-unicode ]
+.RB [ \fIpid\fB  , \ \fIuser\fR]
+.br
+.B pstree
+.BR \-V  , \ \-\-version
+.ad b
+.SH DESCRIPTION
+.B pstree
+shows running processes as a tree.  The tree is rooted at either
+.I pid
+or
+.B init
+if
+.I pid
+is omitted.  If a user name is specified, all process trees rooted at
+processes owned by that user are shown.
+.PP
+.B pstree
+visually merges identical branches by putting them in square brackets
+and prefixing them with the repetition count, e.g.
+.nf
+.sp
+    init\-+\-getty
+         |\-getty
+         |\-getty
+         `\-getty
+.sp
+.fi
+becomes
+.nf
+.sp
+    init\-\-\-4*[getty]
+.sp
+.fi
+.PP
+.PP
+Child threads of a process are found under the parent process and are
+shown with the process name in curly braces, e.g.
+.nf
+.sp
+    icecast2\-\-\-13*[{icecast2}]
+.sp
+.fi
+.PP
+If
+.B pstree
+is called as
+.B pstree.x11
+then it will prompt the user at the end of the line to press return and
+will not return until that has happened.  This is useful for when
+.B pstree
+is run in a xterminal.
+.PP
+Certain kernel or mount parameters, such as the \fIhidepid\fR option for procfs,
+will hide information for some processes. In these situations
+.B pstree
+will attempt to build the tree without this information, showing process
+names as question marks.
+
+.SH OPTIONS
+.IP \fB\-a\fP
+Show command line arguments.  If the command line of a process is
+swapped out, that process is shown in parentheses.
+.B \-a
+implicitly disables compaction for processes but not threads.
+.IP \fB\-A\fP
+Use ASCII characters to draw the tree.
+.IP \fB\-c\fP
+Disable compaction of identical subtrees.  By default, subtrees are
+compacted whenever possible.
+.IP \fB\-C\fP
+Color the process name by given attribute. Currently \fBpstree\fR
+only accepts the value \fBage\fR which colors by process age.
+Processes newer than 60 seconds are green,
+newer than an hour yellow and the remaining red.
+.IP \fB\-g\fP
+Show PGIDs.  Process Group IDs are shown as decimal numbers in
+parentheses after each process name.
+If both PIDs and PGIDs are displayed then PIDs are shown first.
+.IP \fB\-G\fP
+Use VT100 line drawing characters.
+.IP \fB\-h\fP
+Highlight the current process and its ancestors.  This is a no-op if
+the terminal doesn't support highlighting or if neither the current
+process nor any of its ancestors are in the subtree being shown.
+.IP \fB\-H\fP
+Like
+.BR \-h ,
+but highlight the specified process instead.  Unlike with
+.BR \-h ,
+.B pstree
+fails when using
+.B \-H
+if highlighting is not
+available.
+.IP \fB\-l\fP
+Display long lines.  By default, lines are truncated to either the COLUMNS
+environment variable or the display width.  If neither of these methods work,
+the default of 132 columns is used.
+.IP \fB\-n\fP
+Sort processes with the same parent by PID instead of by name. 
+(Numeric sort.)
+.IP \fB\-N\fP
+Show individual trees for each namespace of the type specified.  The
+available types are:
+.IR ipc ", " mnt ", " net ", " pid ", " time ", " user ", " uts .
+Regular users don't
+have access to other users' processes information, so the output will be
+limited.
+.IP \fB\-p\fP
+Show PIDs.  PIDs are shown as decimal numbers in parentheses after each
+process name.
+.B \-p
+implicitly disables compaction.
+.IP \fB\-s\fP
+Show parent processes of the specified process.
+.IP \fB\-S\fP
+Show namespaces transitions.  Like \fB\-N\fR, the output is limited when running
+as a regular user.
+.IP \fB\-t\fP
+Show full names for threads when available.
+.IP \fB\-T\fP
+Hide threads and only show processes.
+.IP \fB\-u\fP
+Show uid transitions.  Whenever the uid of a process differs from the
+uid of its parent, the new uid is shown in parentheses after the
+process name.
+.IP \fB\-U\fP
+Use UTF-8 (Unicode) line drawing characters.  Under Linux 1.1-54 and
+above, UTF-8 mode is entered on the console with
+.B echo \-e '\\033%8'
+and left with
+.BR "echo \-e '\\033%@'" .
+.IP \fB\-V\fP
+Display version information.
+.IP \fB\-Z\fP
+Show the current security attributes of the process. For SELinux systems this
+will be the security context.
+.SH FILES
+.TP
+/proc
+location of the proc file system
+.SH BUGS
+Some character sets may be incompatible with the VT100 characters.
+.SH "SEE ALSO"
+.BR ps (1),
+.BR top (1),
+.BR proc (5).
+.\"{{{}}}