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 LinuxPATH$PATH variablePermissionsUnderstanding standard permissionsUnderstanding the SUID, SGID and Sticky Bit permissionsRedirectionRedirectionRescue modeRescue modeRunlevelsUnderstanding runlevelssysfssysfs (System File System)SystemdSystemd service filesTTYSwitch between TTY consolesVariablesUnderstanding environment variables