Learning shell script programming (Issue 1) _ shell command-line writing rules

• Shell Command Line writing rules

An understanding of the basic functions of shell command lines helps to write better Shell programs. When executing shell commands, multiple commands can be run on one command line, but the semicolon (;) must be used at this time (;) separate commands, for example:

[[Email protected] root] # ls a *-L; free; df

Long shell command line can use backslash characters(\)Expand on the command line, for example:

[[Email protected] root] # echo "this is \

> Long command"

This is long command

Note:

">"Symbols are automatically generated, rather than input.