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 Shell expansion and Pattern matching (Wildcards) Escape Chars, delimiters and Quotes Command Substitution
Working with the bash Shell:
vi editor A one page reference to the vi editor Here docs Here documents Keyboard Cursor control - Cut & paste Job Control Suspend and resume a process Prompt Prompt variable ### Comment / Remark Scripts Writing Shell Scripts BashBangSplat Pronunciation guide for unix
Note that wherever a `;' appears in the description of a command's syntax, it may be replaced with one or more newlines.
For examples of all the above see my recommended Linux books
