tput command is used to initialize and manipulate terminal sessions through the terminfo database. It allows you to control various aspects of the terminal such as cursor movement, text colors, and terminal modes. The command uses the terminfo database to determine the capabilities of the terminal, and then sends the appropriate control codes to the terminal to perform the desired actions.
tput command can be used to perform a wide range of actions on the terminal. Here are some examples of how to use
tput for specific use cases:
- To move the cursor to a specific location on the screen, use the
tput cup 10 20
This will move the cursor to row 10, column 20 on the screen.
- To set the foreground or background color of text, use the
tput setaf 2 tput setab 4
This will set the foreground color to green and the background color to blue.
- To turn on or off terminal modes such as bold or underline, use the
tput bold tput smul tput rmul
This will turn on bold mode, underline mode, or turn off underline mode respectively.
- To clear the screen or erase a portion of the screen, use the
tput clear tput ed
This will clear the entire screen or erase from the current cursor position to the end of the screen respectively.
Here are the available options for the
||Move the cursor to the specified row and column|
||Set the foreground color to the specified color|
||Set the background color to the specified color|
||Turn on bold mode|
||Turn on underline mode|
||Turn off underline mode|
||Clear the entire screen|
||Erase from the current cursor position to the end of the screen|
Here are some common issues you may encounter when using the
tput command, along with their solutions:
- The terminal does not support the requested capability: Some terminals may not support certain capabilities, or may have different names for them. You can use the
infocmpcommand to view the capabilities of the current terminal and their names:
This will display a list of capabilities and their names for the current terminal. You can then use the appropriate name for the capability in the
- The terminal output is garbled or incorrect: This can happen if the terminal’s capabilities are not set correctly. You can use the
resetcommand to reset the terminal’s capabilities to their default values:
This will reset the terminal and clear any garbled output.
tputcommand can be used in shell scripts to perform various actions on the terminal.
- The capabilities of the terminal can vary depending on the terminal emulator being used, so it is important to test your
tputcommands on different terminals to ensure compatibility.