readlink:tldr:1852e
readlink: Get the absolute path to a file.
$ readlink -f ${filename}
try on your machine
The readlink command is used to display the value of a symbolic link or canonical file name. The -f option is used to convert the given filename to its canonical form, which basically means it resolves any symbolic links or relative paths into an absolute path.
So, the command readlink -f ${filename} takes the value of the ${filename} variable and converts it to its canonical form, providing the absolute path of the file. This can be useful when dealing with symbolic links or when you need the absolute path of a file for further operations or referencing.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.