Question on Which

[Afflictedd2]

Hi guys,

I have been wondering for a while, how to change a command you're using:
when I type 'which qmake' in my command line. I get:
/applications/Trolltech/Qt4/linux/bin/qmake
and I want to use the one from
/usr/local/Qt4/bin/qmake
How do I do this? or where is this stuff defined.

Thanks in advance,

Ed.

[i92guboj]

Wherever you define your PATH.

Some usual ways are /etc/profile and the ~/.bash* or ~/.profile* files, however, it all depends on your OS, the shell you use and some other things. You will have to look around to see where that path is appended, and erase it, or substitute by the preferred alternative.

[i92guboj]

If you need an easier way, I guess you can always add your patch in front of the actual PATH variable, that way it will (or should) take precedence over the rest of the contents of the PATH variable.

So, you could do something like PATH="/usr/local/Qt4/bin/:$PATH" in your csh rc file(s). I know nothing about csh, but it should work provided that the syntax is correct for csh.

[Freston]

In addition, you can also create a symlink or an alias pointing to whichever version of the command you want.

If you put a symlink in /bin it will always be executed before anything else, or you can give it a different name like 'qm' that's easy to type/remember and does what you want.

ln -s /usr/local/Qt4/bin/qmake /usr/local/bin/qm

Or in your profile/bashrc:

alias qm="/usr/local/Qt4/bin/qmake"