How to use alias to grep tail of a log file?

Question

I know I can do tail -f filename | grep string tail -f filename | grep string to grep just the string I want from a log file. I am trying to create an alias on .bashrc to do this. I tried alias log='tail -f $1 | grep $2' alias log='tail -f $1 | grep $2' but it's not working. Can any one please point out the correct way of doing this.

Answer 1

You can't use parameter with an alias. To do it, put a function like this in ~/.bashrc :

 tailgrep(){ tail -f "$1" | grep "$2"; }