Common Commands
ls : list directories
cd /* : change directory to *
rm file : deletes file
cp : copy
mv : moves
ln -s file link : creates a sym link link to file
touch file : create or update file
head file : output of the first 10 lines of file
ps : display your currently active processes
top : display all running processes
kill pid : kill process id pid
bg : lists stopped or background jobs
fg : brings the most recent job to foreground
fg n : brings job n to the foreground
whereis app : shows possible locations of app
uname -a : shows kernel information
chmod XXX file : change the permissions of file
4 - read (‘r’)
2 - write (‘w’)
1 - execute (‘x’)
EX:
chmod 777 - read,write,execute for all
chmod 755 - rwx for owner, rx for group and all
cat /proc/cpuinfo : shows cpu information
cat /proc/meminfo : show memory information
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