# Determine sysimage used at runtime

**URL:** <https://discourse.julialang.org/t/determine-sysimage-used-at-runtime/58329>\
**Category:** General Usage\
**Tags:** sysimage\
**Created:** [March 31, 2021, 8:34pm UTC](https://discourse.julialang.org/t/determine-sysimage-used-at-runtime/58329 "2021-03-31T20:34:01Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![airpmb](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/airpmb/32/7826_2.png) [@airpmb](https://discourse.julialang.org/u/airpmb)\
**Post date:** [March 31, 2021, 8:34pm UTC](https://discourse.julialang.org/t/determine-sysimage-used-at-runtime/58329/1 "2021-03-31T20:34:01Z")

</div>

How does one determine what sysimage was used to start Julia? I know I’ve seen how to do this somewhere but can’t for the life of me find it in the docs or searching online.

---

<div class="post-metadata">

**Author:** ![kristoffer.carlsson](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kristoffer.carlsson/32/22_2.png) [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)\
**Post date:** [March 31, 2021, 8:42pm UTC](https://discourse.julialang.org/t/determine-sysimage-used-at-runtime/58329/2 "2021-03-31T20:42:42Z")

</div>

```julia
julia> unsafe_string(Base.JLOptions().image_file)
"/Applications/Julia-1.6.app/Contents/Resources/julia/lib/julia/sys.dylib"

```