EDIT 1:

A naive attempt to remove .bash_profile from the end of the first line of my .bash_profile did not make it disappear from the output of echo $PATH which remained unchanged.

type -all exiftool 

Subsequently, I ran...

PATH=$(echo $PATH | awk -v RS=: -v ORS=: '!($0 in a) {a[$0]; print}') 

print(os.environ['PATH']) 

This is what was supposed to work according to Mitch Frazier from Linux Journal. Obviously this is no a reflection on him or the article but rather on my limited understanding.

export PATH=/Library/Frameworks/Python.framework/Versions/3.8/bin:/usr/local/fsl/bin:/usr/local/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin~/.bash_profile echo -n $PATH | awk -v RS=: '!($0 in a) {a[$0]; printf("%s%s", length(a) > 1 ? ":" : "", $0)}' 

PATH=$(n= IFS=':'; for e in $PATH; do [[ :$n == *:$e:* ]] || n+=$e:; done; echo "${n:0: -1}") 

bash:~ $ type -all exiftool 

Subsequently, I ran...

bash:~ $ echo $PATH 

Which returned...

bash:~ $ PATH=$(echo $PATH | awk -v RS=: -v ORS=: '!($0 in a) {a[$0]; print}') 

>>> print(os.environ['PATH']) 

This is what was supposed to work according to Mitch Frazier from Linux Journal. Obviously this is no reflection on him or the article but rather on my limited understanding.

bash:~ $ export PATH=/Library/Frameworks/Python.framework/Versions/3.8/bin:/usr/local/fsl/bin:/usr/local/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin~/.bash_profile bash:~ $ echo -n $PATH | awk -v RS=: '!($0 in a) {a[$0]; printf("%s%s", length(a) > 1 ? ":" : "", $0)}' 

bash:~ $ PATH=$(n= IFS=':'; for e in $PATH; do [[ :$n == *:$e:* ]] || n+=$e:; done; echo "${n:0: -1}")