Marco Bosisio wrote:
Hi,
do you know wich user environment variable I have to test (executing
a bash script) to know when I am in "su -" (switch user mode) ?
Reading variables provided by "env" command then testing $TERM I
am able to know if not a Linux terminal :
That probably isn't as useful as you think, TERM can have almost any value.
See man(1) tty
for what I think you want.
Also, to test whether you're root, man(1) id.
To test whether you can write a particular file,
test --help
eg
test -w /bin/bash
It's preferable to test for the relevant capability, you may have some
security software (eg selinux) that prevents even root from doing some
things.
--
Cheers
John
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