Self-study Linux instruction analysis-alias

Self-study Linux instruction analysis-alias

1 · command format

Alias name= ' command line '

Alias name= ' command ' I am Free Mans. " ‘

2. Command function

Displays and modifies aliases.

1) to prevent human error by adding some protection parameters to the dangerous command,

2) Turn many complex string commands into a simple string or command

3. Command Labels

[email protected] tmp]# cat ~/.BASHRC
#. BASHRC

# User specific aliases and functions

Alias rm= ' Rm-i '
Alias cp= ' Cp-i '
Alias mv= ' Mv-i '

# Source Global Definitions
if [-F/ETC/BASHRC]; Then
. /etc/bashrc
Fi

[email protected] ~]# cat ~/.BASHRC ~ represents home directory, is currently Root is to represent Root , if other users are representing other directories

Define a permanent Alias

[Email protected] tmp]# VI ~/.BASHRC
#. BASHRC

# User specific aliases and functions

Alias rm= ' Rm-i '
Alias cp= ' Cp-i '
Alias mv= ' Mv-i '

(Type the alias at the time of the related alias definition)

# Source Global Definitions
if [-F/ETC/BASHRC]; Then
. /etc/bashrc
Fi

Self-study Linux instruction analysis-alias