Linux Administration Guide Last modified: December 28, 2022 by baeldung AdministrationSeries Authors Top If you have a few years of experience in the Linux ecosystem, and you’re interested in sharing that experience with the community, have a look at our Contribution Guidelines. General Find Out the Total Physical Memory (RAM) on Linux Tracking Down Where Disk Space Has Gone on Linux Shut Down and Reboot Linux Systems From the Terminal Free Command in Linux The strace Command in Linux Get Overall CPU Usage on Linux How to Monitor Disk IO in a Linux System Shell Using the find -exec Command Option Difference Between .bashrc, .bash-profile, and .profile What’s the Difference Between sh and Bash? Combine and Execute Multiple Linux Commands How to Delete the History of the Last n Commands? Changing the Default Shell in Linux Locale Environment Variables in Linux Users Running Script or Command as Another User in Linux How to Change the Default Home Directory of a User List All Groups in Linux Fixing the “Command Not Found” Error When Using Sudo Files & Directories What does /opt mean in Linux? Mounting Remote Directory in Linux Using SSHFS “No such file or directory” Error When Executing a Binary What are .a and .so Files? How to Remove Symbolic Links Rotating Logs With Logrotate in Linux Fixing the “Too many open files” Error in Linux Networking Mapping Hostnames with Ports in /etc/hosts SSH Tunneling and Proxying Monitoring Network Usage in Linux Processes Kill All Members of a Process Group How to Find Which Process Was Killed by Linux OOM Killer The Most Common Flags in /proc/cpuinfo with Examples Linux Process States Security Copying SSH Keys To Another Machine Encrypting and Decrypting Directory in Linux Why Do We Use su – and Not Just su? Sudo Command in Linux Why Should We Disable Root-login over SSH? Shell Script for Logging Into a SSH Server Services Run a Script on Startup in Linux Run a Java Application as a Service on Linux How to Load Environment Variables in a Cron Job How to Check Logs Using journalctl How to Run a Script at a Certain Time on Linux Configure a Systemd Service to Restart Periodically Docker Starting a Shell in the Alpine Docker Container How to Use Multiple Databases with docker-compose Utilities Configuring and Managing Core Dumps in Linux Guide to the Linux screen Command Linux last Command Solving the “bad ELF interpreter” Error Command Line Clipboard Access and Alternatives Authors Bottom If you have a few years of experience in the Linux ecosystem, and you’re interested in sharing that experience with the community, have a look at our Contribution Guidelines.