View the content of cmdhelp.txt in Linux, and number non-blank lines
cat -b cmdhelp.txt
cat : Concatenate FILE(s) to standard output. -b, --number-nonblank : number nonempty output lines, overrides -n
1 a 2 b 3 c 4 d 5 e
I hope to help every developer quickly find the commands they need. Of course, you can also add your own commonly used commands for easy searching.