I do if ! which pbcopy &> /dev/null; then alias pbcopy="xclip -selection clipboard" alias pbpaste="xclip -o -selection clipboard" fi T

I do if ! which pbcopy &> /dev/null; then alias pbcopy="xclip -selection clipboard" alias pbpaste="xclip -o -selection clipboard" fi The `if` bit is so it only adds the alias if there isn't a `pbcopy`, so I can use the same dotfile on mac and linux