Learning "Linux in respect of such a study," notes quiz Lesson

Learning "Linux in respect of such a study," notes quiz Lesson
Instructor: Liu Trent
fourth single vim editor with the SHELL command script
4.2 SHELL script writing
4.2.1 to write a simple script

parameters receive the user's 4.2.2.
1, $0 name of the current script SHELL 2,$ the number of total parameter #
3, $* 4 All values ​​of position parameters,$ ? Returns the value on the display once the command
5, $ 1, $ 2, $ 3 ... corresponding to the parameter value of the N-th position.
4.2.3 determine the user's parameters
1, the condition is satisfied the number 0 is returned, otherwise it returns a nonzero value other
4.3 flow control statements
1, IF
2, for
3, the while
4, Case
4.4 Scheduled Tasks service program
when the command-minute day Monday