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Linux BASH syntax
Parameters Shell parameters Variables Environment variables Arrays Array Variables
Redirection Spooling to and from files Pipes Redirect the output from one command as input for another
Looping constructs:
IF THEN ELSE Conditional Execution if Conditionally perform a command
for Expand words, and execute commands until Execute commands (until error) while Execute commands
The break and continue
builtins may be used to control loop execution.
Evaluating expressions
Using brackets to Group and expand expressions
Conditional expressions
Arithmetic expressions Escape Chars, delimiters and Quotes Command Substitution
Note that wherever a `;' appears in the description of a command's syntax, it may be replaced with one or more newlines.
Scripts Writing Shell Scripts vi editor A one page reference to the editor commands Job Control Suspend and resume a process Prompt Prompt variable ### Comment / Remark For examples of all the above see my recommended Linux/UNIX books