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Products » µnOS » Applications » Shell
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| | |  | File: | shell.exe
| | Size: | 40 KB
| | Download: | not needed
File is included in the virtual drive of the µnOS demo.
(download µnOS demo) |
Description:
The Console application is a very important application throughout the whole operating system.
It allows the user to operate the system by giving commands, executing programs or retrieving
information about the system's current state.
The Console application is automatically started when booting µnOS.
Console is the only open window you can see on the working screen after system startup.
It is possible to open several Console windows.
But if you close all console windows, you won't be able to start or kill any more applications
or to execute any commands.
The command set of the Console application is steadily extended.
Future versions will implement more commands.
Operating:
The Console is controlled by typed commands.
These commands, their parameters, their output and their description are given in the list below.
Click on a command to get a detailed description.
| cls | clear screen | | color | change font color | | clone | start new shell window | | dir | show directory contents | | exec | execute program | | font | change font | | help | display all shell commands | | kill | terminate a running process | | mem | general memory info | | mode | change shell size | | procinfo | process list | | type | display file content | | ver | display µnOS version number |
Detailed Console Command Descriptions
cls
| Parameters: | none, color or RGB values | | Description: | Clears the Console screen.
There can be given either no parameter, a color name or a RGB value.
Valid color names are:
white, lightgray, darkgray, black, red, green, blue, magenta, btown, yellow, cyan, lightcyan,
lightred, lightgreen, lightblue, lightmagenta.
RGB values are specified by three decimal numbers: R G B (each between 0-255).
| | Example: | cls yellow
cls 192 168 192
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clone
| Parameters: | none | | Description: | Opens another, independent shell window.
The command is equivalent to the manual execution of "shell.exe"'.
| | Example: | clone |
color
| Parameters: | none, color name or RGB value | | Description: | Changes font color.
There can be given either no parameter, a color name or a RGB value.
Valid color names are:
white, lightgray, darkgray, black, red, green, blue, magenta, btown, yellow, cyan, lightcyan,
lightred, lightgreen, lightblue, lightmagenta.
RGB values are specified by three decimal numbers: R G B (each between 0-255).
| | Example: | color blue
color 192 0 0 |
dir
| Parameters: | drive and pathname, -p (optional) | | Description: | Lists the files located in the specified path.
Additionally, the attributes, size, date and time of the files are displayed.
This command can also be executed without any parameters.
In this case the files of the current directory are listed.
The optional parameter -p displays the content only one page at once.
| | Example: | dir z:/ |
exec
| Parameters: | filename | | Description: | Starts the application specified by the parameter.
The parameter need not be the full filename (e.g. "bricks.exe").
The name without extension (e.g. "bricks") will also do it.
If the application is successfully started, it shows the PID for this proccess.
This PID is important if the application should be terminated with the
kill command.
| | Example: | exec bricks.exe |
font
| Parameters: | Font name | | Description: | Changes the console font.
The parameter is the font name and should be either: tiny, small, normal or big.
| | Example: | font small |
help
| Parameters: | none | | Description: | Displays a list of all available console commands.
It also shows a short description for each command.
| | Example: | help |
kill
| Parameters: | process ID (PID) | | Description: | Terminates a running program, specified by the PID.
It also closes the program window and removes the resources occupied by the process.
The PID can be found out with the procinfo command.
| | Example: | kill 12 |
mem
| Parameters: | none | | Description: | Displays information about the memory (RAM).
This covers used memory, free memory and reserved (not usable) memory.
| | Example: | mem |
mode
| Parameters: | width, height | | Description: | Resizes the shell.
Sets the width and height (in characters) of the shell.
| | Example: | mode 60 40 |
procinfo
| Parameters: | -p (optional) | | Description: | Displays a list of all running processes.
Information shown for every process:
- PID: unique process ID
- MEM: memory used by process
- NAME: process name (=program name)
The optional parameter -p displays the content only one page at once.
| | Example: | procinfo -p |
type
| Parameters: | filename, -p (optional) | | Description: | Displays the content of a text file.
The parameter filename specifies the file to display.
The optional parameter -p determines that the file is displayed screen
after screen in the console window.
| | Example: | type readme.txt -p |
ver
| Parameters: | none | | Description: | Displays the version number of µnOS.
| | Example: | ver |
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