Kako brzo mijenjati prvu riječ u zapovjednom bloku?

Sadržaj:

Kako brzo mijenjati prvu riječ u zapovjednom bloku?
Kako brzo mijenjati prvu riječ u zapovjednom bloku?

Video: Kako brzo mijenjati prvu riječ u zapovjednom bloku?

Video: Kako brzo mijenjati prvu riječ u zapovjednom bloku?
Video: Marlin Firmware 2.0.x Explained - YouTube 2024, Travanj
Anonim
Ako je vaš tijek rada popunjen s puno ponavljajućih radnji, onda nikad ne boli tražiti načine kako poboljšati i pojednostaviti tijek rada. Danas SuperUser Q & A post ima neke korisne prijedloge za čitatelja koji žele poboljšati svoj tijek rada.
Ako je vaš tijek rada popunjen s puno ponavljajućih radnji, onda nikad ne boli tražiti načine kako poboljšati i pojednostaviti tijek rada. Danas SuperUser Q & A post ima neke korisne prijedloge za čitatelja koji žele poboljšati svoj tijek rada.

Današnja pitanja i odgovori nam se javljaju zahvaljujući SuperUseru - podjele Stack Exchange-a, zajednice-driven grupiranja Q & A web stranica.

Screenshot zahvaljujući Matt Joyce (Flickr).

Pitanje

Novac SuperUser čitača želi znati kako brzo promijeniti prvu riječ u naredbi bash:

I would like to improve my workflow in bash and realized that I often want to execute the same command to a different executable.

Some Examples

1.) Git

2.) Bash
2.) Bash
Image
Image

I know that I can hit Ctrl+a then Del to remove the first word, but I am wondering if there is a quicker way to do it.

Postoji li brži način za promjenu prve riječi u komandama bash?

Odgovor

SuperUser suradnici Spiff, Hastur, jjlin. i Gustavo Giraldez imaju odgovor za nas. Prvo, Spiff:

!$ expands to the last word of your previous command. So you could do:

Or
Or
Your examples happened to only repeat the last word, so !$ worked fine. If you actually had a lot of arguments that you wanted to repeat, and you just wanted to change the first word, you could use !*, which expands to all words of the previous command except the zeroth.
Your examples happened to only repeat the last word, so !$ worked fine. If you actually had a lot of arguments that you wanted to repeat, and you just wanted to change the first word, you could use !*, which expands to all words of the previous command except the zeroth.

See the “HISTORY EXPANSION” section of the bash man page. There is a lot of flexibility there.

Slijedi odgovor Hastura:

I would like to add a warning (see the answer from Spiff above). With !$, you do not have full visual control of the line you are running. The results can be harmful sometimes, especially if you incur a misprint. It takes what it needs from the history to expand on.

So if you write the last command with a blank space at the beginning, then this command will probably not finish from the history. When you execute your new command with !$, the shell will not take the parameters from the last command line typed, but only from the last part of the history.

Here are some more helpful words and commands.

Zatim odgovor jjlina:

Ctrl+a to go to the beginning of the line, then Alt+d to delete the first word.

A naš konačni odgovor Gustava Giraldeza:

The delete word shortcut is actually Meta+d, and Meta is usually mapped to Alt on Linux machines. On platforms where this is not the case, an alternative to get the Meta modifier is to use Esc as a prefix. You can read more about the Meta Key here.

Imate li nešto za objašnjenje? Zvuči u komentarima. Želite li pročitati više odgovora od drugih tehnoloških korisnika Stack Exchangea? Pogledajte ovdje cijelu raspravu.

Preporučeni: