New posts in Bourne Shell

Is there an "in" operator in bash/bourne?

How can I create an arithmetic loop in a POSIX shell script?

Is "${PS1-}" valid syntax and how does it differ from plain "$PS1"?

How to break a long string into multiple lines in the prompt of read -p within the source code?

Arrays in Unix Bourne Shell

bourne shell if [ -e $directory/file.$suffix ]