用“~”替换主文件夹路径的bash当前工作目录

Question

Is there a way to echo current directory with ~ replacing home directory?

Example:
~/inbox instead of /home/john/inbox

Home directory should not be hardcoded.
There are $PWD and $HOME variables.
A built-in bash tool would be nice.

Answer 1

echo "${PWD/#$HOME/\~}"

This substitutes $HOME with ~ . The # is like ^ in a regex: it anchors the match to the beginning of the string. The \\~ replaces $HOME with a literal tilde; if we didn't use the \\ escape, the ~ would re-expand to $HOME and effectively do nothing.

Answer 2

这应该适用于任何 POSIX shell：

pwd | sed "s|^$HOME|~|"