linux中没有dos2UNIX或者UNIX2dos命令怎么解决办法
[root@localhost ~]#dos2unix tr.py
-bash: dos2unix: command not found
安装方法：
在http://linux.softpedia.com/progDownload/Dos2Unix-Download-5519.html下载hd2u-1.0.0.tgz
[root@localhost ~]#tar -zxf hd2u-1.0.0.tgz
[root@localhost ~]#cd hd2u-1.0.0
[root@localhost ~]#./configure
[root@localhost ~]#yum search popt
[root@localhost ~]#yum install popt.x86_64
