add this to .bashrc :

con() {

con OLD NEW

replaces OLD with NEW in the current directory

and tries to cd into it.

cd "${PWD/$1/$2}" || return 1 }

cwd='\w' echo "${cwd@P}"

same thing as:

echo "${PWD//''}"

the latter has some minor cornercase flaws: (if ~ = /home/bud ; PWD = /home/bud1/bin ; "${PWD//''}" = ~1/bin. https://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html

https://fossbytes.com/gnu-bash-4-4-released-new-features-changes/ ... https://www.youtube.com/watch?v=V9KSqH-M3YY