08-24-2009
One way I've seen it done is to save the parameters in variables, export them, then immediately exec a different script. The new script will obtain values through environment variables and not display them in its commandline, while the program that called it no longer exists, having been replaced with whatever it exec'd. This makes it difficult -- though not impossible -- to catch in the act.
Another way to avoid parameters being visible is to not have them visible in the first place, transferring them to scripts through methods like pipes and so forth.
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LEARN ABOUT HPUX
parse_dynamic_clustertoc
parse_dynamic_clustertoc(1M) System Administration Commands parse_dynamic_clustertoc(1M)
NAME
parse_dynamic_clustertoc - parse clustertoc file based on dynamic entries
SYNOPSIS
cdrom/export/exec/sparc.Solaris_2.x/sbin/install.d/parse_dynamic_clustertoc
cdrom/export/exec/i386.Solaris_2.x/sbin/install.d/parse_dynamic_clustertoc
DESCRIPTION
This script parses the clustertoc file before the suninstall(1M) process is run. parse_dynamic_clustertoc is called by a modified syscon-
fig script on the install CD. When parse_dynamic_clustertoc runs, it reads the clustertoc and when it encounters SUNW_CSRMBRIFF lines, it
either checks the platform using the script's builtin function, or calls an external script. The script exits with a 0 if the cluster
entry is included, otherwise it will be ignored. If the cluster entry is to be included, the SUNW_CSRMBRIFF =(test test_arg)cluster line
is converted to SUNW_CSRMEMBER =cluster.
EXAMPLES
Example 1: Checking For an SX Framebuffer
The following is an example of a simple external test to check for an SX Framebuffer. The entry in the clustertoc file is shown and fol-
lowing that is the script that must be placed in the install.d/dynamic_test directory.
SUNW_CSRMBRIFF=(smcc.dctoc sx)SUNWCsx
#! /bin/sh
#
# Likewise, this file is expected to live under $(TESTDIR).
#
case "$1"
in
sx) prtconf -p | grep 'SUNW,sx' 1> /dev/null;;
esac
FILES
cdrom/Solaris_2.x/locale/C/.clustertoc.dynamic
Dynamic version of the clustertoc file
cdrom/export/exec/sparc.Solaris_2.x/sbin/install.d/dynamic_test
Directory that contains any additional tests
cdrom/export/exec/i386.Solaris_2.x/sbin/install.d/dynamic_test
Directory that contains any additional tests
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SHWPcdrom (Solaris CD) |
+-----------------------------+-----------------------------+
SEE ALSO
suninstall(1M), clustertoc(4), attributes(5)
SunOS 5.10 6 Sep 1995 parse_dynamic_clustertoc(1M)