FreeKB - Linux Fundamentals articles
Linux Fundamentals articles

Command substitutionCommand substitutionDisk QuotaDisk QuotadisplayUnderstanding the $DISPLAY variableEditor$EDITOR variable (default editor)FundamentalsDBUSUnderstanding init, sysvinit, upstart, and systemdHierarchy StandardsUnderstanding the Hierarchy StandardsLogsUnderstanding syslog (system log) daemonNetworkingTest connectivity to another computer in LinuxPermissionsUnderstanding standard permissionsUnderstanding the SUID, SGID and Sticky Bit permissionsRedirectionRedirectionRescue modeRescue modeRunlevelsUnderstanding runlevelssysfssysfs (System File System)SystemdSystemd service filesTTYSwitch between TTY consolesVariablesUnderstanding environment variables