bash在更改目录(cd)之后执行shell函数 [英] bash execute a shell function after a change directory (cd)

问题描述

试图找到一种在更改目录后在BASH中执行功能的方法.

Trying to find a way to execute a function within BASH after changing into a directory.

例如，

# cd code/project/blah
"Your latest modified files are main.cc blah.hpp blah.cc"
(~/code/project/blah) # _

通过上述内容，我希望能够将其他功能包装在bash命令周围.

With the above I'm hoping to be able to wrap other functionality around the bash command.

希望通过zsh钩子函数找到一些东西 http://zsh.sourceforge.net/Doc/Release/Functions.html#SEC45

Was hoping to find something along the lines of zsh hook functions http://zsh.sourceforge.net/Doc/Release/Functions.html#SEC45

推荐答案

不要忘记 pushd 和 popd ，除非您从不使用它们.我会这样做:

Don't forget about pushd and popd, unless you never use them. I'd do this:

PS1='(\w) \$ '
chdir() {
    local action="$1"; shift
    case "$action" in
        # popd needs special care not to pass empty string instead of no args
        popd) [[ $# -eq 0 ]] && builtin popd || builtin popd "$*" ;;
        cd|pushd) builtin $action "$*" ;;
        *) return ;;
    esac
    # now do stuff in the new pwd
    echo Your last 3 modified files:
    ls -t | head -n 3
}
alias cd='chdir cd'
alias pushd='chdir pushd'
alias popd='chdir popd'

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