Kā ātri mainīt pirmo vārdu komandas komandā?

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Kā ātri mainīt pirmo vārdu komandas komandā?
Kā ātri mainīt pirmo vārdu komandas komandā?

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Video: Kā ātri mainīt pirmo vārdu komandas komandā?
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Ja jūsu darbplūsma ir apdzīvota ar daudzām atkārtotām darbībām, tā nekad neliek meklēt veidus, kā uzlabot un pilnveidot darba plūsmu. Šodienas SuperUser Q & A ziņā ir daži noderīgi ieteikumi lasītājam, kas vēlas uzlabot savu darbplūsmu.
Ja jūsu darbplūsma ir apdzīvota ar daudzām atkārtotām darbībām, tā nekad neliek meklēt veidus, kā uzlabot un pilnveidot darba plūsmu. Šodienas SuperUser Q & A ziņā ir daži noderīgi ieteikumi lasītājam, kas vēlas uzlabot savu darbplūsmu.

Šodienas jautājumu un atbilžu sesija mums priecājas par SuperUser - Stack Exchange dalību, kas ir kopienas vadīta Q & A tīmekļa vietņu grupa.

Ekrānuzņēmums pieklājīgi no Matt Joyce (Flickr).

Jautājums

SuperUser lasītāja monēta vēlas uzzināt, kā ātri mainīt pirmo vārdu komandā 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
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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.

Vai monētam ir ātrāks veids, kā nomainīt pirmo vārdu bash komandās?

Atbilde

SuperUser autori Spiff, Hastur, jjlin. un Gustavo Giraldez mums ir atbilde. Pirmais uz augšu, 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.

Seko Husturas atbilde:

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.

Tad atbilde no Jjlin:

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

Un mūsu galīgā atbilde no Gustavo Giraldez:

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.

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