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Q&A Why Does My Device Terminal Echo Back A Tilde ~ When Pressing the DELETE Key?

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TitleQ&A Why Does My Device Terminal Echo Back A Tilde ~ When Pressing the DELETE Key?
Question
Why does my device terminal echo back a tilde character ~ when pressing the DELETE key?
Environment
  • Extreme Management Center (XMC, formerly NetSight)
  • ExtremeXOS (EXOS)
  • BOSS
  • VOSS
  • Other Extreme platforms
  • Other Third-Party Vendor platforms.
Answer
The DELETE key, used to delete a character to the right of the current cursor, uses an "[3~" escape code sequence most vendor CLI shells / terminals do not support. As a result the ~ is echoed back to the terminal.

Most terminals use an alternative CTRL+D \004 code to delete characters to the right of the cursor.
Additional notes
Product documentation may incorrectly indicate DELETE and CTRL+D perform the same function while they do not.

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