This document implements 14 set operations by using common Unix utilities such as sort, uniq, diff, comm, cat, head, tail, awk, and others. It implements the following operations: Set Membership. Set Equality. Set Cardinality. Subset Test. Set Union. Set Intersection. Set Complement. Set Symmetric Difference. Power Set. Set Cartesian Product. Disjoint Set Test. Empty Set Test. Minimum. Maximum. The cheat sheet was created as a part of an article "Set Operations in the Unix Shell".

This document implements 14 set operations by using common Unix utilities such as sort, uniq, diff, comm, cat, head, tail, awk, and others. It implements the following operations: Set Membership. Set Equality. Set Cardinality. Subset Test. Set Union. Set Intersection. Set Complement. Set Symmetric Difference. Power Set. Set Cartesian Product. Disjoint Set Test. Empty Set Test. Minimum. Maximum. The cheat sheet was created as a part of an article "Set Operations in Unix Shell Simplified".

This cheat sheet includes history editing keyboard shortcuts (emacs and vi mode), history expansion summary - event designators, word designators and modifiers, shell special variables and `shopt’ options to modify history behavior, examples. The cheat sheet was created as a part of an article "The Definitive Guide to Bash Command Line History".

Cheat sheet contains all the perl's pack() and unpack() function's template parameters with a detailed description what each parameter does. I also included printf() and sprintf() function format flags and format attributes with their descriptions! The cheat sheet was created as a part of an article "Perl’s pack/unpack and printf Cheat Sheet".

Cheat sheet contains all the predefined/special variables of Perl. They have been collected form `perldoc perlvar' manual page. The cheat sheet was created as a part of an article "Perl’s Special Variable Cheat Sheet". Created by Peteris Krumins (about him) from catonmat - good coders code, great reuse .

This sed cheat sheet contains: command line summary, command description, if they take single address or pattern, or a range of addresses, and what they modify (input stream, output stream, pattern space or hold buffer), command line argument summary, extensions, short summary of adderss range format. The cheat sheet was created as a part of an article "Sed - Superman Stream Editor - Cheat Sheet".

This cheat sheet contains: Line addressing symbols and their description (line addressing summary), and all the ed commands and their description (command summary). The cheat sheet was created as a part of an article "Ed - Unix Text Editor - Cheat Sheet". Created by Peteris Krumins (about him) from catonmat - good coders code, great reuse .

This cheat sheet contains: Predefined Variable Summary, which lists all the predefined variables and which awk versions (original awk, nawk or gawk) have it built in, GNU awk’s command line argument summary, I/O statements, Numeric functions, Bit manipulation functions, I18N (internationalization) functions, String functions, and finally, Time functions. The cheat sheet was created as a part of an article "Awk, Nawk and Gawk Cheat Sheet".

The cheat sheet includes: Commands for entering input mode, Basic movement commands, Character finding commands, Character finding commands, Deletion commands, Undo, redo and copy/paste commands, Commands for history manipulation, Completion commands, A few misc. commands, and Tips and examples. The cheat sheet was created by examining bash source code, so it is very precise and complete! It is a part of an article "Working Productively in Bash’s Vi Command Line Editing Mode".

Screen - term emulator cheat sheet. This cheat sheat contains all the default mappings such as creating new window, switching between windows, killing windows, splitting and clearing, etc. The cheat sheet was created as a part of an article "Screen VT100/ANSI Terminal Emulator Cheat Sheet". Created by Peteris Krumins (about him) from catonmat - good coders code, great reuse .

This cheat sheet includes: Commands for movement (moving), changing text, killing and yanking (copy and paste), keyboard macros and completing (completion). The cheat sheet was created as a part of an article "Bash Emacs Editing Mode Cheat Sheet". Created by Peteris Krumins (about him) from catonmat - good coders code, great reuse .