Configuration and Diagnostic Tools

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.

X Configuration

  • 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 Management

Library 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.
Kernel Management:
  • 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 Diagnostic

System 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. 


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