For a while now I’ve known about the rather annoying Linux shell freezing that happens when you press Ctrl-S. At first, it seems like a connection drop-out if it’s remote (I use the Linux shell a lot, via PuTTY on Windows), but it took me a few months to realise that it was when I pressed a key. A few months later, I learnt it was caused by Ctrl-S, when I meant to press Ctrl-D (EOF).
Apparently, this is intended behaviour – a scroll lock of sorts. Ctrl-S again doesn’t solve it, but Ctrl-Q will.
So, here’s a few other keyboard shortcuts you may or may not find useful – not all of these may work on every unix/linux variant.
|Ctrl-A||Moves the cursor to the beginning of the line. See Ctrl-E.|
|Ctrl-B||Moves the cursor backward one character. See Ctrl-F.|
|Ctrl-C||SIGINT – interrupts (cancels)|
|Ctrl-D||EOF – end of file character, marks the end of user input. If used on an interactive shell, will log you out. If used on a STDIN stream, will mark the end of the stream so it stops expecting input from you.(These are essentially different angles on the same thing)|
|Ctrl-E||Moves the cursor to the end of the line. See Ctrl-A.|
|Ctrl-F||Moves the cursor forward one character. See Ctrl-B.|
|Ctrl-L||Clears the screen (like the clear command)|
|Ctrl-N||Next item in history. See Ctrl-P|
|Ctrl-P||Previous item in history. See Ctrl-N|
|Ctrl-Q||XON – Resumes screen output. See Ctrl-S.|
|Ctrl-R||Reverse history search.|
|Ctrl-S||XOFF – Suspends screen output. See Ctrl-Q.|
|Ctrl-W||Delete last word|
|Ctrl-Z||SIGTSTP – suspend a process. Can be resumed with either fg or bg|
Thanks to http://www.computerhope.com/ushort.htm and http://www.cdrinfo.com/Sections/Reviews/Specific.aspx?ArticleId=19672 for some of the info here.