Bash Tips: Speedy Keyboard Shortcuts
Speedy Bash Shortcuts
(C = control key, M = alt/meta key.)
- C-r and C-s : Launch an incremental search backward and forward (respectively), in your command-line history.
- C-j and C-g : Abandon an incremental search either with the line found, or with the original line (respectively).
- M-. or ESC then . : Both of these insert the final argument to the last command at the cursor point. This is useful when moving files around and editing them.
- M-C-y : Insert the first argument to the previous command at the cursor point. If you want the nth argument, hit M-n beforehand. So M-2 M-C-y would give you the 2nd argument to the previous command. (A lot of keys to remember, but it's useful once in a while.)
- C-w and M-backspace : Both delete the word behind the cursor. C-w uses whitespace as a boundary, whereas M-backspace uses non-alphanumeric characters. So if you have file.txt and hit C-w, you'll delete the lot, whereas M-backspace would leave you with file.. This has very obvious uses. (It also works with underscores.)
I learned some new shortcuts while researching this, so hopefully you learned something useful, too!
Ed Note: A quick note about the Perltidy tip from a fortnight ago. Thanks to Randal L. Schwartz for pointing out it's a good idea to set up tests for your code, to check that it does the same thing after Perltidy is finished as it did before. As he discusses here, ultimately the only thing that can interpret Perl code entirely reliably is the Perl interpreter itself. So be aware that there are circumstances in which Perltidy (and similar programs) can break code!
Article courtesy of Serverwatch
Solid state disks (SSDs) made a splash in consumer technology, and now the technology has its eyes on the enterprise storage market. Download this eBook to see what SSDs can do for your infrastructure and review the pros and cons of this potentially game-changing storage technology.
- 1Linux Top 3: GNOME 3.12 and New Betas for Ubuntu 14.04 and OpenMandriva Lx 2014.0
- 2Linux Top 3: Linus Lashes out, Linux 3.14 Gets PIE and Ubuntu One is Done.
- 3Linux Top 3: Ubuntu 14.04, Debian Gives Squeeze More Life and Red Hat Goes Atomic
- 4Linux Top 3: CoreOS, Oracle Enterprise Linux 7 and Ubuntu 14.10
- 5Linux Top 3: Debian Gives Up on Upstart, Ubuntu and Linux Kernel Updates