dash-o questions

dash-o answers

• How to ask for confirmation using the command `sed` [closed]
• In C (also C++), how '&' operator works as both address operator and bitwise operator ? As operator overloading is not supported by C
• return the pid of the command instead returning tee pid
• Exclude only specific folder in tar command
• How can I make bash 'pop' and 'shift' functions that actually return the item popped or shifted?
• How to have config option in Makefile
• Shell scripting cut -d " " -f4 file.txt command
• Makefile: exit on conditional
• Calculate Percentile(s) in Bash
• pitfalls of sourcing file in a function scope