curs_ins_wch - Linux


curs_ins_wch inserts a multi-byte Unicode character into the current cursor position. This command is primarily used within terminal emulators to facilitate cursor movement and text manipulation within text-based user interfaces.


curs_ins_wch [OPTION]... [WCHAR]...


  • -w: Specify the screen width in columns.
  • -h: Specify the screen height in rows.
  • -x: Specify the cursor column position as a base-1 value.
  • -y: Specify the cursor row position as a base-1 value.


Insert a single Unicode character at the current position:

curs_ins_wch 'Ω'

Insert multiple Unicode characters:

curs_ins_wch 'A' 'B' 'Γ'

Insert characters at a specific position:

curs_ins_wch -x 5 -y 10 'Hello'

Common Issues

Invalid Unicode Characters:

If the provided Unicode character is not valid or supported by the terminal emulator, the character may not be inserted correctly. Ensure that the Unicode value is valid and supported.

Buffer Exceeded:

If the number of characters to insert exceeds the available buffer space, the characters may not be inserted correctly. Adjust the buffer size or insert fewer characters.


  • bash: Use curs_ins_wch to dynamically update text-based interfaces, such as menus or prompts.
  • Python: Interface with curs_ins_wch through the pexpect library to control terminal applications and automate text input.

Related Commands

  • curs_ins_str: Inserts a string at the current cursor position.
  • curs_get_pos: Retrieves the current cursor position.
  • curs_move: Moves the cursor to a specific position.