> > Additional question: is it possible to use "\t" with grep? It doesn't > > seems to work...
> You can look at two different examples using tab in grep expressions > http://cvs.sourceforge.net/viewcvs.py/eciadsl/usermode/eciadsl-start?rev=1.4.2.2&view=markup > > http://cvs.sourceforge.net/viewcvs.py/ipcop/ipcop/src/rc.d/rc.eciadsl?rev=1.4.2.12&view=markup The first example is basically wrong. It boils down to: grep -E "[ \t]" file This is not looking for space or tab but for space, backslash or "t". As already stated, grep does not support "\t" for tab. Use: grep "[[:blank:]]" file instead if you dont want to work with a real tab character. [:blank:] is exactly space and tab. Rob
