Recently updated/posted Linux and UNIX FAQ:
=> Boot Ubuntu Linux into Rescue mode to fix system – How do I boot my Ubuntu Linux server into Rescue mode to fix system?
=> Unable to create installation source – Add directories into YaST as an installation source – I have created my own patch files on the hard drive. How do I add all those directories into Suse Linux YaST as an installation source?
=> How to uninstall GRUB – How do I uninstall GRUB using old good MS-DOS fdisk or Linux/UNIX dd command?
=> Can I run fsck or e2fsck when Linux file system is mounted? Can I run run fsck/e2fsc on a live Linux file system?
=> Configure Sendmail SSL encryption for sending and receiving email – Configure Sendmail MTA to use SSL encryption for sending/receiving email using valid SSL certificate.
=> Linux configure Network Address Translation or NAT – Old good Linux NAT!
=> Use sudo or sudoers to start, stop & restart Apache – Sudo to stop and/or restart Apache web server!
=> How to install firefox-2.0.tar.gz in Linux – I have downloaded firefox file from mozilla web site to my Linux desktop system. The name of file is firefox-2.0.tar.gz. How do I install firefox-2.0.tar.gz in Fedora Core Linux?
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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 |