# readlink

Replicate `readlink -f` as bash script using mainly dependencies available on most platforms:

* `readlink` (without options)
* `cd`
* `pwd -P`
* `dirname`
* `basename`
* `test -e` (as `[ -e <file> ]`)

# Known issues

* When `readlink` is part of a pipe some links contain the current pipe described like `pipe:[123456]` where the number changes on every call.  
  `readlink` resolves these as valid links.

  e.g.
  ```
  $ readlink -f /dev/stdout
  /dev/pts/0

  $ readlink -f /dev/stdout | cat
  /proc/737861/fd/pipe:[2332393]

  $ ./rdlink.sh /dev/stdout

  ```
  Whereas `rdlink` is not able to evaluate such links, because the pipe is already invalid as soon as a expression like `result="$(readlink "${tocheck}")"` returns.