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'cd -' is implemented by the cd command using the OLDPWD environment variable. It works in all shells.
by bronson 12y ago
'cd -' is implemented by the cd command using the OLDPWD environment variable. It works in all shells.
- ggreer 12y agoI did some digging and it turns out I had autopushd set. No wonder I didn't understand the usefulness of pushd/popd; I was already using them. Also, by "cd -" I meant cd -[tab], cd -1, cd -2, etc.
- mokkol 12y agoThanks! didnt know the tab feature.
- zwegner 12y agocd is a shell built-in, not an external command. It has to be, since it changes the directory of the shell process, which can't be done by a child process. So shells do have to implement this specially.