Linux Shell Scripting - Advanced

Explore how sed, the stream editor, performs on-the-fly text substitutions, with single and multiple commands, flags like g, n, and p, and reading from or writing to files.

Explore sed addressing and basic text manipulation, using numeric and pattern addresses, line ranges, and grouped commands; learn deletion and global substitutions in this intro to sed part 2.

Explore advanced sed techniques, including inserting and appending text, line and string addressing, substitutions with y, changes with c, and reading from files for efficient shell scripting.

Explore gawk, the GNU awk; learn extracting and formatting data with field separators and $0, $1 to generate reports, and craft scripts with begin and end blocks.

Master regular expressions in Linux shell scripting using sed, awk, and grep, focusing on anchors, escape sequences, dot wildcard, and character classes for precise text matching.

Master advanced regular expressions for shell scripting, using character classes, ranges, negation, quantifiers, grouping, and alternation with sed, awk, and grep.

Explains how to build graphical bash scripts—from a text-based menu to a GUI—using functions, case statements, recursion, and the select construct, with examples like disk usage and IP display.

Explore building graphical bash interfaces with dialog and Zenity, using widgets like message boxes, calendars, forms, and menus, while handling exit codes and standard error output.

Learn advanced sed multi-line commands by using n, N, d, and p to manipulate the pattern space, perform cross-line substitutions, and master regex-based replacements.

Master advanced sed techniques for multi-line editing, including capital D for delete up to a newline, capital N for appending the next line, and capital P for multi-line printing.

Master advanced sed concepts in Linux shell scripting by using hold space and pattern space for data control. Learn command negation with exclamation marks to selectively run or skip actions.

Explore advanced gawk techniques by mastering variables, built-in and user-defined, and manipulating field and record separators to process text with precision.

Explore advanced gawk arrays (associative arrays, hash tables) in this episode, learning to define, access, iterate, delete, and match by fields and regex for shell scripting.

Explore advanced gawk programming by mastering structured commands, including if statements, while and do-while loops, and C-style for loops. See how gawk formats reports.

Master advanced gawk formatting with printf specifiers for aligned, multi-type output and learn to define functions and use libraries for reusable, modular scripting.