I'm using Lubuntu 14.04 with a fresh install (Monday) and I noticed that my grep command doesn't work. Whatever I do, it shows me the grep usage page. For instance, if I try to run: grep test * or grep test test.txt, I get the usage page. Command which grep returns /bin/grep, I also tried alias grep="grep" but nothing works.
ps -ef|grep [a]bc
ps -ef|grep abc|grep -v grep
Both fairly returns the same result.
For example, the process name is dynamic and we are having the process name in a variable, how we can apply the above trick.
For example "a" is the variable which contains the process name abc, then