The command g/RE/p stands for globally search for the regular expression (RE) and print the line. The return statuses are 0 for success, 1 for pattern not found, and 2 for file not found:
$ ps -ef | grep root
The preceding command will show all processes running currently whose user ID is root.
$ ll /proc | grep "cpuinfo"
The preceding command will show the file with the name cpuinfo from the /proc directory.
$ grep -lir "text" * // show only file names containing text // $ grep -ir "text" dir_name // show lines of files //
We will try the following commands on file love.txt:
|^||Beginning-of-line anchor||'^mango'||Will display all lines beginning with mango|