# I didn't know this! (pkg undo and redo)

**URL:** <https://discourse.julialang.org/t/i-didnt-know-this-pkg-undo-and-redo/140290>\
**Category:** General Usage\
**Tags:** repl, pkg\
**Created:** [October 27, 2026, 3:38pm UTC](https://discourse.julialang.org/t/i-didnt-know-this-pkg-undo-and-redo/140290 "2026-10-27T15:38:07Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![ianshmean](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ianshmean/32/216042_2.png) [@ianshmean](https://discourse.julialang.org/u/ianshmean)\
**Post date:** [October 27, 2026, 3:38pm UTC](https://discourse.julialang.org/t/i-didnt-know-this-pkg-undo-and-redo/140290/1 "2026-10-27T15:38:07Z")

</div>

In the spirit of other “I didn’t know this”'s.

I’m not sure how many people know about

```julia-auto
pkg> undo
pkg> redo

```