| exit | | Terminates the shell. |
| halt | | Stop the system. |
| init | | Process control initialization. |
| initscript | | Script that executes inittab commands. |
| logout | | Log the user off the system. |
| poweroff | | Brings the system down. |
| reboot | | Reboot the system. |
| runlevel | | List the current and previous runlevel. |
| setsid | | Run a program in a new session. |
| shutdown | | If your system has many users, use the command "shutdown -h +time message", where time is the time in minutes until the system is halted, and message is a short explanation of why the system is shutting down.
# shutdown -h +10 'We will install a new disk. System should be back on-line in three hours.' |
| telinit | | By requesting run level 1 a system can be taken to single user mode. |
| ctrlaltdel | | Set the function of the ctrl alt del combination. |
| isapnp | | Configure ISA plug and play devices. |
| 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. |
| kbdrate | | Set the keyboard repeat rate and delay time. |
| kernelcfg | | A Redhat GUI kernel configuration tool, Start X, then run it from a console session. |
| linuxconf | | Redhat's GUI linux system configuration tool. |
| lspci | | List all pci devices. |
| mesg | | Control write access to your terminal. |
| mouseconfig | | A Redhat Linux tool used to configure the /etc/sysconfig.mouse file. This is a GUI tool. |
| ndc | | Script file used to restart, stop, start the DNS server. |
| Printtool | | Redhat's GUI printer configuration tool. |
| quota | | Display disk usage and limits. |
| quotacheck | | Scan a filesystem for disk usages. |
| quotaoff | | Turn file system quotas off. |
| quotaon | | Turn file system quotas on. |
| samba | | Script file used to stop, start, restart samba services when not run using inetd. |
| setpci | | Configure pci devices. |
| setserial | | Set/get serial port information. |
| setterm | | Set terminal attributes. |
| setup | | Set up devices and file systems. |
| stty | | Used to configure and print the console devices. |
| swapon | | Enable devices and files for paging and swapping. |
| swapoff | | Disable devices and files for paging and swapping. |
| 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. |
| tset | | Used to initialize terminals. |
| arch | | Print machine architecture. |
| df | | Shows disk free space. |
| du | | Shows disk usage. |
| free | | Display used and free memory on the system. |
| ipcrm | | Provide information on ipc facilities. |
| ipcs | | Same as ipcrm. |
| lsdev | | Display information about installed hardware via files in the /proc directory. |
| lsof | | List open files. |
| lspci | | List PCI devices . |
| pnpdump | | Lists ISA plug and play devices resource information. |
| procinfo | | Display system status gathered from proc. |
| pstree | | Display a tree of processes. |
| runlevel | | Find the current and previous system runlevel. |
| strace | | Trace ssytem calls and signals for a binary program. |
| stty | | Change and print terminal line settings. |
| tload | | Prints a graphic representation of the system load average. |
| tty | | Print the filename of the terminal connected to standard input. |
| uname | | Print system information, Prints Linux. |
| vmstat | | Report virtual memory statistics. |
| xcpustate | | Displays CPU states (idle, nice, system, kernel) statistics. Runs in X? |
| cal | | Calendar. |
| clock | | Used to change or get current time. The command "clock -–w" sets the hardware clock. |
| date | | Print or set the system date and time. |
| hwclock | | Set or read the hardware CMOS clock. |
| timed | | Time server daemon to synchronize the host's time with other machines, normally invoked at boot time from the rc(8) file. |
| timedc | | Timed control program. |
| tzset | | Used to change the users private time zone by setting the TZ environment variable. |
| uptime | | Reports how long the system has been running. |
| zdump | | Prints the current time in each zonename named on the command line. |
| zic | | Reads text from files named on the command line and creates time conversion files. |