I work on a lot of websites and often need to go up to the public_html folder.

This command creates an alias so that however many folders deep I am, I will be taken up to the correct folder.

alias ph='....': This creates a shortcut so that when command ph is typed, the part between the quotes is executed

cd ...: This changes directory to the directory specified

PWD: This is a global bash variable that contains the current directory

${...%/public_html*}: This removes /public_html and anything after it from the specified string

Finally, /public_html at the end is appended onto the string.

So, to sum up, when ph is run, we ask bash to change the directory to the current working directory with anything after public_html removed.

Examples

If I am in the directory ~/Sites/site1/public_html/test/blog/ I will be taken to ~/Sites/site1/public_html/

If I am in the directory ~/Sites/site2/public_html/test/sources/javascript/es6/ I will be taken to ~/Sites/site2/public_html/