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Top Forums UNIX for Advanced & Expert Users How to hide command line parameters? Post 302347033 by Corona688 on Monday 24th of August 2009 05:54:06 PM
Old 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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service(8)						      System Manager's Manual							service(8)

NAME
service - run a System V init script SYNOPSIS
service SCRIPT COMMAND [OPTIONS] service --status-all service --help | -h | --version DESCRIPTION
service runs a System V init script in as predictable environment as possible, removing most environment variables and with current working directory set to /. The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT. The supported values of COMMAND depend on the invoked script, service passes COMMAND and OPTIONS it to the init script unmodified. All scripts should support at least the start and stop commands. As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the start command. service --status-all runs all init scripts, in alphabetical order, with the status command. If the init script file does not exist, the script tries to use legacy actions. If there is no suitable legacy action found and COMMAND is one of actions specified in LSB Core Specification, input is redirected to the systemctl. Otherwise the command fails with return code 2. FILES
/etc/init.d The directory containing System V init scripts. ENVIRONMENT
LANG, TERM The only environment variables passed to the init scripts. SEE ALSO
chkconfig(8), ntsysv(8), systemd(1), systemctl(8), systemd.service(5) Jan 2006 service(8)
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