1

What does pressing Alt + Shift + 3 in Terminal do?

All I can see is that it prints a pound sign and jumps to the next line, but, supposedly, it does something special.

  • 1
    What shell is this supposed to be answered for? – Kusalananda Oct 13 '11 at 9:14
  • I get a heart for when I do alt+shift+3, but it may be different on your end. – user103159 Feb 14 '15 at 23:18
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In readline, Alt can be interpreted as \e. On my system (and likely yours as well) \e# is bound to insert-comment, which according to the bash(1) man page comments or uncomments the current command line and executes it. If you press it without typing anything then # is executed, which has no effect since it's a comment.

  • Unless you are, like me, using ksh with Vi key bindings, in which case no # is inserted when nothing yet has been typed. – Kusalananda Oct 13 '11 at 9:13
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It depends on the layout. In my case it creates ¥ character.

  • Did you perhaps think the asker meant AltGr-#? – Ignacio Vazquez-Abrams Oct 13 '11 at 6:58
  • No, as I said, it depends on the layout. I don't have AltGr on my keyboard at all. – greenoldman Oct 13 '11 at 9:00
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    @macias Are you sure about this? AltGr is usually just an alias for "right Alt key". Does the same appear when you use the left Alt (assuming you have one)? – rozcietrzewiacz Oct 13 '11 at 11:27

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