My grep commands

When I search for things in my codebase I find that using the terminal and grep is usually the best option. Here is what I usually run:

# find meng in all files under a specific directory

# switches i - case insensitive, r - recurrsive, H - show file and path, n - line number
grep -irHn 'meng' current/

# you can count using c
grep -irc 'meng' current/

# you can use regex
grep -ire ^d current/
# search files in current direct for any line that starts with d or D
# make sure e is an the end for example I want line numbers
grep -irne ^d current/

# to skip binary files use I (uppercase i)
grep -iIHrn 'meng' current/

 

Learn how to use top command in linux

I find myself using this often while debugging errors or trying to figure why a server is slow or unresponsive.

# show all processes
top

# to quit top type q
# to sort press Shift+O
# K for cpu % or use Shift+P

# show all processes from a specific user
top -u username

# example for me using deployer as the user to run web processes
top -u deployer

# highlight working process
z

# show path for process
c

# kill pid
k

# get help
h