pargs, penv, pauxv - print process arguments, environment variables, or
auxiliary vector
pargs [-aceFlx] [pid | core]...
pauxv [-cF] [pid | core]...
penv [-cF] [pid | core]...
The pargs utility examines a target process or process core file and
prints arguments, environment variables and values, or the process auxiliary
vector.
pargs outputs unprintable characters as escaped octal in
the format \xxx, unless the character is one of the characters
specified in the "Escape Sequences" section of
formats(7), in which case the character is printed as specified in
that section.
pargs attempts to be sensitive to the locale of the target
process. If the target process and the pargs process do not share a
common character encoding, pargs attempts to employ the
iconv(3C) facility to generate a printable version of the extracted
strings. In the event that such a conversion is impossible, strings are
displayed as 7-bit ASCII.
The pauxv command is equivalent to running pargs
with the -x option.
The penv command is equivalent to running pargs with
the -e option.
The following options are supported by pargs. Only the -c and
-F options are supported by pauxv and penv:
-a
Prints process arguments as contained in argv[]
(default).
-c
Treats strings in the target process as though they were
encoded in 7-bit
ASCII, regardless of the locale of the target. The use
of
iconv(3C) is suppressed.
-e
Prints process environment variables and values as
pointed at by the _environ symbol or by pr_envp in
/proc/pid/psinfo.
-F
Force. Grabs the target process even if another process
has control.
-l
Displays the arguments as a single command line. The
command line is printed in a manner suitable for interpretation by
/bin/sh. If the arguments contain unprintable characters, or if the
target process is in a different locale, a warning message is displayed. The
resulting command line might not be interpreted correctly by
/bin/sh.
-x
Prints process auxiliary vector.
The following operands are supported:
pid
Process ID list.
core
Process core file.
Caution should be exercised when using the -F flag. Imposing two
controlling processes on one victim process can lead to chaos. Safety is
assured only if the primary controlling process, typically a debugger, has
stopped the victim process and the primary controlling process is doing
nothing at the moment of application of the proc tool in question.
The following exit values are returned:
0
Successful operation.
non-zero
An error has occurred (such as no such process,
permission denied, or invalid option).
/proc/pid/*
Process information and control files.
See attributes(7) for descriptions of the following attributes:
| ATTRIBUTE
TYPE |
ATTRIBUTE VALUE |
| Interface Stability |
Evolving |