Converting relative path into absolute path?

user_268543 0
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I'm not sure if these paths are duplicates. Given the relative path, how do I determine absolute path using a shell script?

Example:

relative path: /x/y/../../a/b/z/../c/d

absolute path: /a/b/c/d
absolute-path perl path shell unix
7 Answers

I wanted to use realpath but it is not available on my system (macOS), so I came up with this script:

#!/bin/sh

# NAME
#   absolute_path.sh -- convert relative path into absolute path
#
# SYNOPSYS
#   absolute_path.sh ../relative/path/to/file

echo "$(cd $(dirname $1); pwd)/$(basename $1)"

Example:

./absolute_path.sh ../styles/academy-of-management-review.csl 
/Users/doej/GitHub/styles/academy-of-management-review.csl
user_12448840
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