The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
systemd-escape – Escape strings for usage in systemd unit names Synopsis systemd-escape [OPTIONS…] [STRING…]Descriptionsystemd-escape may be used to escape strings for inclusion in systemd unit names. The command may be used to escape and to undo escaping of strings. The command takes any number of strings on the command line, and will process them individually,…
systemd-detect-virt – Detect execution in a virtualized environment Synopsis systemd-detect-virt [OPTIONS…]Descriptionsystemd-detect-virt detects execution in a virtualized environment. It identifies the virtualization technology and can distinguish full machine virtualization from container virtualization. systemd-detect-virt exits with a return value of 0 (success) if a virtualization technology is detected, and non-zero (error) otherwise. By default, any type of…
systemd-delta – Find overridden configuration files Synopsis systemd-delta [OPTIONS…] [PREFIX[/SUFFIX]|SUFFIX…]Descriptionsystemd-delta may be used to identify and compare configuration files that override other configuration files. Files in /etc/ have highest priority, files in /run/ have the second highest priority, …, files in /usr/lib/ have lowest priority. Files in a directory with higher priority override files with…
systemd-cryptenroll – Enroll PKCS#11, FIDO2, TPM2 token/devices to LUKS2 encrypted volumes Synopsis systemd-cryptenroll [OPTIONS…][DEVICE]Descriptionsystemd-cryptenroll is a tool for enrolling hardware security tokens and devices into a LUKS2 encrypted volume, which may then be used to unlock the volume during boot. Specifically, it supports tokens and credentials of the following kind to be enrolled: 1. PKCS#11…
systemd-coredumpctl – Retrieve coredumps from the journal Synopsis systemd-coredumpctl [OPTIONS…] {COMMAND} [PID|COMM|EXE|MATCH…]Descriptionsystemd-coredumpctl may be used to retrieve coredumps from systemd-journald(8). OptionsThe following options are understood: -h, –help Print a short help text and exit. –version Print a short version string and exit. -F, –field= Print all possible data values the specified field takes in matching…
systemd-cgtop – Show top control groups by their resource usage Synopsis systemd-cgtop [OPTIONS…] [GROUP]Descriptionsystemd-cgtop shows the top control groups of the local Linux control group hierarchy, ordered by their CPU, memory, or disk I/O load. The display is refreshed in regular intervals (by default every 1s), similar in style to top(1). If a control group…
systemd-cgls – Recursively show control group contents Synopsis systemd-cgls [OPTIONS…] [CGROUP…] systemd-cgls [OPTIONS…] –unit|–user-unit [UNIT…]Descriptionsystemd-cgls recursively shows the contents of the selected Linux control group hierarchy in a tree. If arguments are specified, shows all member processes of the specified control groups plus all their subgroups and their members. The control groups may either be…
systemd-cat – Connect a pipeline or program’s output with the journal Synopsis systemd-cat [OPTIONS…][COMMAND][ARGUMENTS…] systemd-cat [OPTIONS…]Descriptionsystemd-cat may be used to connect the standard input and output of a process to the journal, or as a filter tool in a shell pipeline to pass the output the previous pipeline element generates to the journal. If no…
systemd-bootchart – Boot performance graphing tool Descriptionsystemd-bootchart is a tool, usually run at system startup, that collects the CPU load, disk load, memory usage, as well as per-process information from a running system. Collected results are output as an SVG graph. Normally, systemd-bootchart is invoked by the kernel by passing init=/usr/lib/systemd/systemd-bootchart on the kernel command…
systemd-ask-password – Query the user for a system password Synopsis systemd-ask-password [OPTIONS…][MESSAGE]Descriptionsystemd-ask-password may be used to query a system password or passphrase from the user, using a question message specified on the command line. When run from a TTY it will query a password on the TTY and print it to standard output. When run…
systemd-analyze – Analyze and debug system manager Synopsis systemd-analyze [OPTIONS…] [time] systemd-analyze [OPTIONS…] blame systemd-analyze [OPTIONS…] critical-chain [UNIT…] systemd-analyze [OPTIONS…] dump systemd-analyze [OPTIONS…] plot [>file.svg] systemd-analyze [OPTIONS…] dot [PATTERN…] [>file.dot] systemd-analyze [OPTIONS…] unit-paths systemd-analyze [OPTIONS…] exit-status [STATUS…] systemd-analyze [OPTIONS…] capability [CAPABILITY…] systemd-analyze [OPTIONS…] condition CONDITION… systemd-analyze [OPTIONS…] syscall-filter [SET…] systemd-analyze [OPTIONS…] calendar SPEC… systemd-analyze [OPTIONS…]…
systemctl – Control the systemd system and service manager Synopsis systemctl [OPTIONS…] COMMAND [UNIT…]Descriptionsystemctl may be used to introspect and control the state of the "systemd" system and service manager. Please refer to systemd(1) for an introduction into the basic concepts and functionality this tool manages. CommandsThe following commands are understood: Unit Commands (Introspection and…
system.rootdaemonrc, .rootdaemonrc – access control directives for ROOT daemons LocationsROOTDAEMORC, $HOME/.rootdaemonrc /etc/root/system.rootdaemonrc, $ROOTSYS/etc/system.rootdaemonrcDescriptionThis manual page documents the format of directives specifying access control directives for ROOT daemons. These directives are read from a text file whose full path is taken from the environment variable ROOTDAEMONRC. If such a variable in undefined, the daemon looks for…
system.rootdaemonrc, .rootdaemonrc – access control directives for ROOT daemons LocationsROOTDAEMORC, $HOME/.rootdaemonrc /etc/root/system.rootdaemonrc, $ROOTSYS/etc/system.rootdaemonrcDescriptionThis manual page documents the format of directives specifying access control directives for ROOT daemons. These directives are read from a text file whose full path is taken from the environment variable ROOTDAEMONRC. If such a variable in undefined, the daemon looks for…
system-tools-backends – message dispatcher for system-tools-backends Synopsissystem-tools-backends DescriptionSystem Tools Backends are a set of cross-platform modules for Linux and other Unix systems. The backends provide an common DBus interface to all platforms to modify or read the system configuration in a distro independent fashion. This program is a lightweight DBus message dispatcher. It does not…
system-switch-displaymanager – graphical and text mode interface for choosing graphical display manager Synopsissystem-switch-displaymanager [display manager name] Descriptionsystem-switch-displaymanager provides a simple method of choosing between the various display manager available under Fedora, including GDM, KDM, XDM and WDM. If X Windows is running, switchdesk will bring up a dialog box which allows the user to choose…
system-setup-keyboard – xorg.conf keyboard layout daemon Synopsissystem-setup-keyboardDescriptionsystem-setup-keyboard is a daemon that monitors /etc/sysconfig/keyboard and writes out an xorg.conf.d snippet based on this file’s contents. Whenever the file is updated, system-setup-keyboard writes out the matching XKB configuration for the selected layout. This configuration applies to all keyboards but may be overwritten by other xorg.conf.d snippets or…
system-config-printer – configure a CUPS server Synopsis system-config-printer [[–show-jobs printer] | [–debug] | [–help]]Descriptionsystem-config-printer configures a CUPS server. It uses the CUPS API (bound to Python with pycups) to do this. The communication with the server is performed using IPP. As a result, it is equally able to configure a remote CUPS server as a local…
system-config-printer-applet – print job manager Synopsis system-config-printer-applet [–help] [–version] [–debug]Descriptionsystem-config-printer-applet is a print job manager for CUPS. Normally it will display a printer icon in the notification area, greyed out when there are no print jobs for the current user. Clicking on the icon displays a simple print job manager for cancelling or reprinting jobs….
system-config-language – A graphical interface for modifying the system language. DescriptionThis tool will allow user to add language support. When used to add support for any language, this tool will use yum and install the required packages to use desktop in your preferred language. This will also change the locale of the root user only. This…