Useful Unix Commands

1. Count number of lines on all the files in the current folder

wc -l *

2. Count the number of files on the current directory :

ls | wc -l

3. Print all the line containing word/s in a file
grep -iw "search words" arc.log

4. Thread dumping for a process
 jcmd 8308 JFR.start duration=100s filename=tempo.jfr