Common command
top
: shows the resources being useddu -s -h
: shows the storage of the directorycat /var/log/dmesg | wc -l
: shows the number of lines of a file, a similar example isw | wc -l
- call a variable: use a $
- export PATH=”~/bin:$PATH”: search the personal path first, and then the system path.
chmod
- For private files or directory, use
chmod 700 file
to ensure no one else would be able to see.
- For private files or directory, use