linux - 在 bash 别名或函数中使用历史扩展

Question

我正在尝试做一件简单的事情，让我的队友生活得更轻松。他们不断地将引号复制到格式化的命令行中，这会破坏命令，即:“test“与“test”

事实证明，它令人惊讶地烦人:

function damn() { !!:gs/“/" }

或:

alias damn='!!:gs/“/"'

似乎都不起作用，并且一直给我错误

-bash: !!:gs/“/" : No such file or directory

或者只是:

>

我一定是遗漏了一些明显的东西。

Answer 1

! 在函数或别名中不起作用。根据 bash 手册:

History expansion is performed immediately after a complete line is read, before the shell breaks it into words.

你可以使用内置的fc命令:

[STEP 100] # echo $BASH_VERSION
4.4.19(1)-release
[STEP 101] # alias damn='fc -s “=\" ”=\" '
[STEP 102] # echo “test”
“test”
[STEP 103] # damn
echo "test"
test
[STEP 104] #

---

为了快速引用，以下是help fc的输出。

fc: fc [-e ename] [-lnr] [first] [last] or fc -s [OLD=NEW] [command]
    Display or execute commands from the history list.

    fc is used to list or edit and re-execute commands from the history list.
    FIRST and LAST can be numbers specifying the range, or FIRST can be a
    string, which means the most recent command beginning with that
    string.

    Options:
      -e ENAME  select which editor to use.  Default is FCEDIT, then EDITOR,
                then vi
      -l        list lines instead of editing
      -n        omit line numbers when listing
      -r        reverse the order of the lines (newest listed first)

|   With the `fc -s [OLD=NEW ...] [command]' format, COMMAND is
|   re-executed after the substitution OLD=NEW is performed.

    A useful alias to use with this is r='fc -s', so that typing `r cc'
    runs the last command beginning with `cc' and typing `r' re-executes
    the last command.

    Exit Status:
    Returns success or status of executed command; non-zero if an error occurs.