Question

我想知道如何获取传递给bash函数的最后一个参数，如：

#!/bin/bash

function hello() {
    all=$@         # all arguments
    n=$#           # number of arguments
    first_arg=$1   # argument one
    last_arg= ???  # How to get the last argument?
}

如何将$last_arg设置为传递给函数的最后一个参数的值？

Answer 1

如果from tkinter import * class Window(): def __init__(self, root): self.f = Frame(root) self.f.pack() self.e = Entry(self.f, width = 20) self.e.pack(side = LEFT) self.b = Button(self.f, width = 15, text = "OK", command = lambda: self.OK(root)) self.b.pack(side = RIGHT) def OK(self, root): print ("Accessing entry inside class: %s" %self.e.get()) #Could pass to pri.py here self.word = self.e.get() new = self.newWindow() root.wait_window(new) root.destroy() def newWindow(self): def done(newWindow): newWindow.destroy() newWindow = Toplevel() newWindow.tkraise() # <- Personally never needed this, but it's in l = Label(newWindow, text = "Here is the variable in a top window: %s" %self.word) #Using the variable in another window l.pack(side = LEFT) b = Button(newWindow, text = "Done", command = lambda: done(newWindow)) b.pack(side = RIGHT) return newWindow root = Tk() w = Window(root) w.f.mainloop() print ("Accessing entry outside class: %s" %w.word) #Or here拥有all，则最后一个参数为$@

如何获取shell中的最后一个参数

1 个答案: