Linux命令总结

1.备份
cpio

tar

dump

dd
cp


2.磁盘管理
df -h /root
du -sh /root
fdisk
mount
ex2
fscn
lvm

3.swap区建立2种方法

4.X11

5.sudo 命令配置

6.quota配置

7.find

8.umask

9. ssh sftp shttp

 

10. shell中ftp操作：EOC

ftp -n "$host" > "$basedir"/"$filename".log 2> "$basedir"/"$filename".log <<EOC 
user    $id         $pw 
binary 
cd      $remodir 
put     $filename 
bye 
EOC

（from vbird linux）

11. xargs

cat delete_file.txt |xargs rm -f

 

12login shell:. /etc/profile   /etc/profile.d

 none login shell: ~/.bash_profile  ~/.bashrc   /etc/bashrc

 

13.suid vs. sudo

     sticky : files in directory with the sticky bit set can only be removed by owner or root regardless of the write

      sgid: file created in directory with sgid bit set have group  affiliations of the group of the directory

       Both sgid and sticky bit are set on the group directory

14. vi

ctrl+d ctrl +u

1G

G

H M L: current screen

yy yw yl dd dw dc cc cw cl

2yy

p P

a i

!!command: output of command is inserted into file

!}command: text as input

:1,10s/sting1/sting2/g:  use sed to replace sting1 witn sting2 globally from line 1 to line 10

 1,$(  %   ): from line 1 to the lastest line

  .,.+10: current line to +10

 

:r file   read file into

:1,20w file

 

:set all

:set number

:se nonu

 

15. Magic SysRQ: http://en.wikipedia.org/wiki/Magic_SysRq_key

16.OOPS

17.User management

useradd  /etc/passwd /etc/shadow /etc/group
passwd
usermod
id userid
chown
usermod -g 
usermod -L
usermod -U
userdel -r username
chage

newusers filename

groupadd
groupmod
groupdel