Thus, consider using lowercase names for your own shell variables to avoid unintended conflicts (keeping in mind that setting a shell variable will overwrite ... ... <看更多>

When creating shell scripts, variables are used to store information that can be used later in the script (once or many times over). The value stored can be ... ... <看更多>

The variables used in ${1:-8} and ${2:-4} are the positional parameters $1 and $2 . These hold the values passed to the script (or shell ... ... <看更多>