System and Network Configuration
- linuxconf - A GUI interactive interface available on Redhat 6.0 or later which includes netconf configuration.
- netconf - A GUI interactive interface available on Redhat 6.0 and later.
- kbdconf - A Redhat Linux tool which configures the /etc/sysconfig/keyboard file which specifies the location of the keyboard map file. This is a GUI based tool.
- mouseconfig - A Redhat Linux tool used to configure the /etc/sysconfig.mouse file. This is a GUI tool.
- timeconfig - A Redhat Linux tool used to configure the /etc/sysconfig/clock file. This is a GUI tool used to set timezone and whether or not the clock is set to GMT time.
- kernelcfg - A Redhat kernel configuration utility to be started from X.
- stty - Used to configure and print the console devices.
- setterm - Set terminal attributes.
- vmstat - Report statistics on virtual memory.
- XF86Setup - A newer X configuration program with a GUI interface which modifies the "/etc/X11/XF86Config" configuration file.
- xf86config - An older X configuration program with a text based interface. It also modifies the "/etc/X11/XF86Config" configuration file.
- Xconfigurator - The Redhat tool used during system setup to configure X.
- SuperProbe - A program that probes the video card to determine its type for use with setting up X.
- xvidtune - This program will test video modes on the fly without modification to your X configuration. Read the usr/X11R6/lib/X11/doc/VideoModes.doc file before running this program.
Library and kernel Dependency ManagementLibrary management:
- ldd - Used to determine shared libraries used by binary files. Type "ldd /bin/ls" to see the shared libraries used by the "ls" command.
- ldconfig - Used to update links and cache for system use of the most recent runtime shared libraries.
- lsmod - List currently installed kernel modules.
- depmod - Creates a dependency file, "modules.dep" in the directory "/lib/modules/x.x.x", later used by modprobe to automatically load the relevant modules.
- insmod - Installs a loadable kernel module into the running kernel.
- rmmod - Unloads modules, Ex: rmmod ftape
- modprobe - Used to load a module or set of modules. Loads all modules specified in the file "modules.dep".
General DiagnosticSystem resources
- free - Show system memory availability and usage
- df - Show the amount of disk free space on each mounted filesystem.
- du - Show disk usage
- lspci - List PCI devices
- pnpdump - Lists ISA PNP device resource information.
- vmstat - Reports virtual memory statistics.
- env - List the current environment variables.
- printenv - Print a copy of the environment.
- set - Shows how the environment is set up. This command can be very useful when debugging the environment.
- runlevel - List the current and previous runlevel.
- uname - Print system information. In my case, it prints "Linux".
- dmesg - Show the last kernel messages printed during the last boot.