Recently updated/posted Linux and UNIX FAQ (mostly useful to Linux/UNIX new administrators or users) :
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- Update Fedora 7 Linux
- OpenBSD install BASH shell package
- Star / Stop FTP server on FreeBSD / OpenBSD
- How to install Linux / UNIX *.tar.gz tarball files
- Install Language support in CentOS 5 or Red Hat Enterprise Linux
- Display or view the perl cgi errors in a web browser
- Display the security context associated with files or directories under SELinux kernel
- Linux display each multiple SMP CPU processors utilization individually
- Make /etc/inittab changes effective without rebooting Linux server
- Clear mysql command line history stored in ~/.mysql_history file
- Linux / UNIX find out size of email account or mailbox
- What is the difference between UNIX and MAC OS X?
- Does the UNIX or Linux has GUI?
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| Category | List of Unix and Linux commands |
|---|---|
| File Management | cat |
| Firewall | Alpine Awall • CentOS 8 • OpenSUSE • RHEL 8 • Ubuntu 16.04 • Ubuntu 18.04 • Ubuntu 20.04 |
| Network Utilities | dig • host • ip • nmap |
| OpenVPN | CentOS 7 • CentOS 8 • Debian 10 • Debian 8/9 • Ubuntu 18.04 • Ubuntu 20.04 |
| Package Manager | apk • apt |
| Processes Management | bg • chroot • cron • disown • fg • jobs • killall • kill • pidof • pstree • pwdx • time |
| Searching | grep • whereis • which |
| User Information | groups • id • lastcomm • last • lid/libuser-lid • logname • members • users • whoami • who • w |
| WireGuard VPN | CentOS 8 • Debian 10 • Firewall • Ubuntu 20.04 |