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Full Discussion: Alias not working
Operating Systems Solaris Alias not working Post 302918908 by Don Cragun on Friday 26th of September 2014 05:25:22 AM
Old 09-26-2014
Quote:
Originally Posted by jlliagre
The question being asked in the Solaris forum, /tmp standard permissions are protecting files created by someone to be altered by someone else, at least if the owner doesn't create world writable files (or if both users belong to the same group and the file is group writable).
"drwxrwxrwt" permissions for /tmp and /var/tmp is quite standard on Unix & Linux distributions nowadays.
And, as I said, on a Solaris systems with normal permissions on /tmp, if I run wisecracker's script creating /tmp/ECHO and /tmp/PRINTF with my default umask and then you run wisecracker's script:
  • your attempts to create /tmp/ECHO and /tmp/PRINTF will fail, and
  • unless you're in the same group I'm in, you won't be able to read the /tmp/ECHO and /tmp/PRINTF that I created (which will either terminate your script with an error or set ECHO and PRINTF to empty strings; so
  • your attempts to run $ECHO or $PRINTF won't get you the echo or the printf utilities you wanted (although I don't know why you'd need to choose an alternative version of printf anyway). Instead they'd give your script syntax errors for trying to execute the unknown -e and \x1B[0m commands if your code didn't die on the failed printf and variable initialization commands.
  • And, of course, note that the -e option is not an option on Solaris /bin/echo either (it is a text operand to be printed).

What am I missing??? Why are you arguing that wisecracker's code provides a reasonable approach to solve the OP's problem? Given that any other user on the system can prevent you from creating an executable file in /tmp to be run by your script (just by running the same script with no malice intended), why do you think /tmp is an appropriate directory in which to install utilities (or files containing the paths of utilities) for use by any script that you want to run?
 

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