我想要一张通配符，正好是64个字符。任何更少和行被忽略。任何更多和该行被忽略。
在foo.txt我有以下内容：
.* /Users/1337/X$
.* /Users/1337/R$
在bar.txt我有以下内容：
1121cfccd5913f0a63fec40a6ffd44ea64f9dc135c66634ba001d10bcf4302a2 /Users/1337/R
aa460da4af72c482231e28e688e01f2778a88ce31a08826899d54ef7183998b5 / /Users/1337/R
4355a46b19d348dc2f57c046f8ef63d4538ebb936000f3c9ee954a27460dd865 /Users/1337/W
53c234e5e8472b6ac51c1ae1cab3fe06fad053beb8ebfd8977b010655bfdd3c3 /Users/1337/X
我尝试使用grep来过滤掉与/Users/1337/X和/Users/1337/R完全匹配的行，其前面有一个SHA256哈希值，它总是正好是64个字符。这样可以防止grep意外地从bar.txt拉出第2行，R最后有/Users，grep之前有两个空格。
这个命令是我得到的最接近的命令，但如前所述，这可能会导致cat bar.txt | grep -f foo.txt
找错线：
1121cfccd5913f0a63fec40a6ffd44ea64f9dc135c66634ba001d10bcf4302a2 /Users/1337/R
53c234e5e8472b6ac51c1ae1cab3fe06fad053beb8ebfd8977b010655bfdd3c3 /Users/1337/X
我希望它输出：
1121cfccd5913f0a63fec40a6ffd44ea64f9dc135c66634ba001d10bcf4302a2 /Users/1337/R
aa460da4af72c482231e28e688e01f2778a88ce31a08826899d54ef7183998b5 / /Users/1337/R
53c234e5e8472b6ac51c1ae1cab3fe06fad053beb8ebfd8977b010655bfdd3c3 /Users/1337/X
但它输出了这个：
import tkinter
from tkinter import *
class Main_frame():
def __init__(self):
self._title = 'Radiobutton Test'
self._resize = False
self.set_mainframe_size_for_geometry(350, 200)
self.create_mainframe()
def create_mainframe(self):
self.mainframe = Tk()
self.mainframe.title(self._title)
self.mainframe.geometry(self.get_mainframe_size_for_geometry())
self.mainframe.resizable(self._resize, self._resize)
def set_mainframe_size_for_geometry(self, mainframe_width, mainframe_height):
self._mainframe_size_for_geometry = str(mainframe_width) + 'x' + str(mainframe_height)
def get_mainframe_size_for_geometry(self):
return self._mainframe_size_for_geometry
class Create_Radiobutton():
def __init__(self,frame, name, positionx, positiony, group, value, controller):
self.group = IntVar()
self._set_frame_to_insert_radiobutton = frame
self._radiobutton_label = name
self._radiobutton_horizontal_position = positionx
self._radiobutton_vertical_position = positiony
self._radiobutton_group = group
self._radiobutton_value = value
self.get_intvar()
self.create_radiobutton()
self._radiobutton_controller = controller
def create_radiobutton(self):
self.set_radiobutton(Radiobutton(self._set_frame_to_insert_radiobutton,
text=self._radiobutton_label,
variable=self.get_group(),
value=self._radiobutton_value,
command= lambda : self._radiobutton_controller.main_method(self.get_group().get())))
self.get_radiobutton().place(x=self._radiobutton_horizontal_position,
y=self._radiobutton_vertical_position)
def set_radiobutton(self, radiobutton):
self._radiobutton = radiobutton
def get_radiobutton(self):
return self._radiobutton
def get_radiobutton_controller(self, radiobutton_controller):
return self.get_radiobutton().cget(radiobutton_controller)
# here is the method to set the IntVar() for each group
def get_intvar(self):
if self._radiobutton_group == 1:
self.set_group1()
elif self._radiobutton_group == 2:
self.set_group2()
elif self._radiobutton_group == 3:
self.set_group3()
def set_group1(self):
self.group = IntVar()
def set_group2(self):
self.group = IntVar()
def set_group3(self):
self.group = IntVar()
def get_group(self):
return self.group
class Radiobutton_controller():
"""
here is the constructor from radiobutton_controller
with the list dictionarys_with_active_values
"""
def __init__(self, button):
self.button = button
self.list_with_correct_values = [[], [], []]
"""
from here i excecute the method
self.get_radiobutton_value(intvar_value) to fill the list with
values
"""
def main_method(self, intvar_value):
self.get_radiobutton_value(intvar_value)
print(self.list_with_correct_values)
def get_checkbutton1(self):
for element in self.button:
return self.button['Checkbutton1'].get()
def get_checkbutton2(self):
for element in self.button:
return self.button['Checkbutton1'].get()
"""
in this method i put the value in the list
"""
def get_radiobutton_value(self, intvar_value):
if intvar_value > 0 and intvar_value <= 2:
self.list_with_correct_values[0].clear()
self.list_with_correct_values[0].append(intvar_value)
if self.get_checkbutton1() == 1:
if intvar_value > 2 and intvar_value <= 4:
self.list_with_correct_values[1].clear()
self.list_with_correct_values[1].append(intvar_value)
else:
self.list_with_correct_values[1].clear()
self.list_with_correct_values[1].append(0)
if self.get_checkbutton2() == 1:
if intvar_value > 4 and intvar_value <= 6:
self.list_with_correct_values[2].clear()
self.list_with_correct_values[2].append(intvar_value)
else:
self.list_with_correct_values[2].clear()
self.list_with_correct_values[2].append(0)
class Build_Application():
def main(self):
self.radiobutton_dictionary = {}
self.radiobutton = {}
self.controller = Radiobutton_controller(self.radiobutton_dictionary)
self.mainframe = Main_frame()
self.radio1 = Create_Radiobutton(self.mainframe.mainframe,'radio1', 10, 10, 1, 1, self.controller)
self.radio2 = Create_Radiobutton(self.mainframe.mainframe,'radio2', 100, 10, 1, 2, self.controller)
self.radio3 = Create_Radiobutton(self.mainframe.mainframe,'radio3', 10, 50, 2, 3, self.controller)
self.radio4 = Create_Radiobutton(self.mainframe.mainframe,'radio4', 100, 50, 2, 4, self.controller)
self.radio5 = Create_Radiobutton(self.mainframe.mainframe,'radio5', 10, 100, 3, 5, self.controller)
self.radio6 = Create_Radiobutton(self.mainframe.mainframe,'radio6', 100, 100, 3, 6, self.controller)
self.checkbox1 = IntVar()
self.checkbox2 = IntVar()
self.checkbutton1 = Checkbutton(self.mainframe.mainframe, text='Disable/Enable', variable=self.checkbox1, ).place(x=200, y=50)
self.checkbutton1 = Checkbutton(self.mainframe.mainframe, text='Disable/Enable', variable=self.checkbox2, ).place(x=200, y=100)
self.radiobutton_dictionary['Radio1'] = self.radio1
self.radiobutton_dictionary['Radio2'] = self.radio2
self.radiobutton_dictionary['Radio3'] = self.radio3
self.radiobutton_dictionary['Radio4'] = self.radio4
self.radiobutton_dictionary['Radio5'] = self.radio5
self.radiobutton_dictionary['Radio6'] = self.radio6
self.radiobutton['Radio1'] = self.radio1
self.radiobutton['Radio2'] = self.radio2
self.radiobutton['Radio3'] = self.radio3
self.radiobutton['Radio4'] = self.radio4
self.radiobutton['Radio5'] = self.radio5
self.radiobutton['Radio6'] = self.radio6
self.radiobutton_dictionary['Checkbutton1'] = self.checkbox1
self.radiobutton_dictionary['Checkbutton2'] = self.checkbox2
self.mainframe.mainframe.mainloop()
app = Build_Application()
app.main()
我该如何解决这个问题？
Mac OS X Yosemite，bash 3.2.57（1）-release
答案 0 :(得分：1)
首先确保在foo.txt中使用锚点以确保匹配完整的行：
cat foo.txt
^.{64} /Users/1337/X$
^.{64} /Users/1337/R$
然后使用此grep命令获取结果：
grep -Ef foo.txt bar.txt
1121cfccd5913f0a63fec40a6ffd44ea64f9dc135c66634ba001d10bcf4302a2 /Users/1337/R
53c234e5e8472b6ac51c1ae1cab3fe06fad053beb8ebfd8977b010655bfdd3c3 /Users/1337/X
-E命令中支持扩展正则表达式需要 grep选项。