Q. How can I convert a relative path to absolute path for using them in shell script.
Some times it required to get absolute path from a given relative path. For example I am in /home/surendra and relative path to /etc/apache2 will be ../../etc/apache2 for this relative path I require absolute path so that the value is constant with the script irrespective of my directory changes. This can be acheived by using command readlink.
readlink -f relativepath
Example1: I am at /home/surendra I want to know what will be the absolute path to ../../etc/ from that directory.
firstname.lastname@example.org:~$ readlink -f ../../etc
Example2: I am at /etc/samba and I have ../apache/mods-enabled which is relative to /etc/samba, I want to know the absolute path.
email@example.com:~$ cd /etc/samba/
firstname.lastname@example.org:/etc/samba$ readlink -f ../apache2/mods-enabled/
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