使用Python实现简单Linux的find命令
代码如下:
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#!/usr/bin/python
#*-*coding:utf8*-*
from optparse import OptionParser
import os
import sys
#使用选项帮助信息可以使用中文
reload (sys)
sys.setdefaultencoding( "utf-8" )
#定义选项以及命令使用帮助信息
usage = sys.argv[ 0 ] + " Directory Options\n\n例:" + sys.argv[ 0 ] + " /etc --type f --name passwd\n\n注意:选项和目录益可随意调换,可以写多个目录,会从多个目录中进行查找"
parser = OptionParser(usage)
parser.add_option( "--type" ,
dest = "filetype" ,
action = "store" ,
default = False ,
help = "指定查找对象的类型,文件类型可以是 d:代表目录 f:代表文件" )
parser.add_option( "--name" ,
dest = "name" ,
action = "store" ,
default = False ,
help = "指定查找对象的名称,文件或目录全名" )
options, args = parser.parse_args()
def find( dir ):
directory = os.walk( dir )
for x, y, z in directory:
if options.filetype = = "f" :
for name in z:
if name = = options.name:
path = os.path.join(x,name)
print (path)
if options.filetype = = "d" :
for name in y:
if name = = options.name:
path = os.path.join(x,name)
print (path)
#判断目录是否存在,并且是否为目录
for dir in args:
if os.path.exists( dir ) = = False :
sys.stderr.write( dir + " is not found\n" )
exit( 100 )
if os.path.isfile( dir ):
sys.stderr.write( dir + " is a file\n" )
exit( 101 )
#判断--type选项是否正确,只能跟 f 或者 d
if not (options.filetype = = "f" or options.filetype = = "d" ):
sys.stderr.write( "--type only support d or f\n" )
exit( 102 )
if __name__ = = "__main__" :
for dir in args:
find( dir )
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运行结果如下:
原文链接:http://www.linuxidc.com/Linux/2017-06/144488.htm