Learn how to correctly extract filename and extension in Bash for files with multiple dots. Discover parameter expansion solutions that outperform cut, awk, and sed methods.
Master multiple methods to check if variables are set in Bash scripting. From parameter expansion to the -v test operator, discover the best techniques for robust variable validation in your shell scripts.
Learn the proper way to capture command output in Bash variables. Fix common mistakes with single quotes and master $() syntax for reliable command substitution in shell scripts.
Learn multiple methods to concatenate string variables in Bash including simple juxtaposition, += operator, printf command, and command substitution. Complete guide with practical examples for PHP developers transitioning to Bash.
Learn multiple methods to trim whitespace from Bash variables efficiently. Discover parameter expansion, read command, sed, and tr solutions for clean shell scripting.
Discover the main differences between sh and Bash shell programming. Learn about compatibility, features, arrays, and when to use each shell for optimal scripting.