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ls //list
ls -la //long all ll
drwxr-xr-x //directory
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file a.txt
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cd //change directory
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midir //make directory
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pwd //print word directory
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touch a.txt //creat file
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cp test2 test3 //copy
cp "*.txt" dir2
cd mydir/
cp -r ../mydir ../mydir2 //copy -recursive
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mv test2.txt b.txt //rename move
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rmdir //remove directory
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rm //remove
rm -r //remove recursive
rm -rf //remove recursive force
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echo "Hi"
echo "hi">a.txt
echo "hi,hello">>a.txt
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tree mydir
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tar -v //verbose
tar -cf //create file
tar -xvf //exclude
tar -cf 1.tar a.txt b.txt
tar -cvf md.tar mydir
tar -xvf md.tar
tar -cvfz a.tar.gz a.txt b.txt
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chmod 777 b.txt
chmod 755 b.txt
chmod u-r b.txt //user rwxrwxrwx --> -wxrwxrwx
chmod a=x b.txt //all rwxrwxrwx ---> --x--x--x 111
chmod g+w b.txt //group rwxr-xrwx---> rwxrwxrwx
chmod o-x b.txt //other rwxrwxrwx---> rwxrwxrw-
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mount /dev/cdrom /mnt/cdr //将光驱中的内容 以目录的形式挂载到 /mnt/cdr中
umount /dev/cdrom //卸载
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ifconfig //interface configeration
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setup //改变地址之后 （修改配置文件） 要重新启动服务
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service network restart //start stop restart status
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ping 192.168.1.200 //ping不通： 1.防火墙 2.桥接模式 3.network重启
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rpm -ivh telnet-server-0.17-38.e15.i386.rpm //install verbose horizontal
Failed dependencies: xinetd is need by telnet-server-0.17-38.e15.i386.rpm
rpm -ivh xinetd-2.3.14-10.e15.i386.rpm
service xinetd restart
service xinetd status