Files
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Permission
Symbolic: r-- -w- --x | 421
Binary: 100 010 001 | -------
Decimal: 4 2 1 | 000 = 0
| 001 = 1
Symbolic: rwx r-x r-x | 010 = 2
Binary: 111 101 101 | 011 = 3
Decimal: 7 5 5 | 100 = 4
/ / / | 101 = 5
Owner ---/ / / | 110 = 6
Group ------/ / | 111 = 7
Others ---------/ | Binary to Octal chart
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Processes
- top
- ps
- ps -aux
- kill -9
- killall
Console general
- Pipe |
- Outfile >
- tee = outfile + console out
Services
- sudo service %%name%% start|stop|restart
- sudo systemctl stop|start|restart %%name%%
Users
- adduser %%username%%
- adduser %%username%% %%group%%
- groupadd %%group%%
Networking
- ifconfig
- ping
- netstats
- traceroute
- nmap
Remote acces
Man pages
Startup scripts
- /etc/init.d/
- /etc/system.d/system/*.service