FreeKB - Linux Fundamentals articles
Linux Fundamentals articles

Base 16Convert a base 16 hexadecimal string to decimal in LinuxCommand substitutionCommand substitutionCPUHigh CPU on LinuxDisk QuotaDisk QuotadisplayUnderstanding the $DISPLAY variableEditor$EDITOR variable (default editor)epoch timeUnderstanding epoch timeForeground / BackgroundRunning jobs in the foreground and background in LinuxFundamentalsDBUSUnderstanding init, sysvinit, upstart, and systemdHierarchy StandardsUnderstanding the Hierarchy StandardsLogsUnderstanding syslog (system log) daemonMemory / RAMAnalyzing swap memoryNetworkingTest connectivity to another computer in LinuxPATH$LD_LIBRARY_PATH variable$PATH variablePath$LD_LIBRARY_PATH variable$PATH variablePermissionsUnderstanding standard permissionsUnderstanding the SUID, SGID and Sticky Bit permissionsRedirectionRedirection (stdout stderr)Rescue modeRescue modeRunlevelsUnderstanding runlevelsStoragekibibyes (KiB) vs kilobyes and mebibytes (MiB) vs megabytes (MB)sysfssysfs (System File System)SystemdSystemd service filesTTYSwitch between TTY consolesVariablesUnderstanding environment variables

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