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lang-bash
realpathnorrealinkis 'a standard Unix utility' so if that's what you were after then you've gone with the wrong answer.realpathcomes from coreutils package, which also contains tools such aswho,touchorcat. It's quite standar set of GNU tools, so you can be quite sure that this is installed on almost any linux based machine.That said, you are right: there are 2 issues with it: i) you will likely miss it in default install on non GNU unix systems (like OpenBSD) ii) this tools was introduced in version 8.15 (so it's quite new, from 2012), so you will miss it on long term stable systems (like RHEL 6).