How to restore the same rust after reinstall linux?

help
1

in my personal folder I have a folder called ".cargo". created by: curl https://sh.rustup.rs -sSf | sh
But reinstall my linux system.
Can I restore to my new system without re-downloading?

2

If it's still running on the same platform, it's safe to just copy the .cargo folder back, and update your shell to add $HOME/.cargo/bin dir to PATH.

3

how would it be ?

i try open rust from cargo folder, and error:
pichi@bs:~/.cargo/bin$ ./rustc --version
error: rustup could not choose a version of rustc to run, because one wasn't specified explicitly, and no default is conf
igured.
help: run 'rustup default stable' to download the latest stable release of Rust and set it as your default toolchain.

4

When copying you should preserve hardlinks, since all those files in bin are hardlinks to the rustup wrapper. And run rustup default stable as instructed.

5

I suggest rsync -aHAX to copy while preserving hardlinks (and other things). With -vi or -Pvi if you like feedback, and simulate with -n to check yourself or if you're otherwise unfamiliar with rsync.

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6

i have a folder in my home "./cargo" that contain another folder "bin" and bin contain:
cargo, cargo-clippy, rustc, and others ...

I ran this command in my shell:
rustup default stable
THE OUTPUT:
info: syncing channel updates for 'stable-x86_64-unknown-linux-gnu'
732.1 KiB / 732.1 KiB (100 %) 163.7 KiB/s in 8s ETA: 0s
info: latest update on 2023-03-09, rust version 1.68.0 (2c8cc3432 2023-03-06)
info: downloading component 'cargo'
info: downloading component 'clippy'
... etc

HOW JUMP THIS DOWNLOAD ?? (I already have it in the cargo folder)

7

i have a folder in my home "./cargo" that contain another folder "bin" and bin contain:
cargo, cargo-clippy, rustc, and others ...

I ran this command in my shell:
rustup default stable
THE OUTPUT:
info: syncing channel updates for 'stable-x86_64-unknown-linux-gnu'
732.1 KiB / 732.1 KiB (100 %) 163.7 KiB/s in 8s ETA: 0s
info: latest update on 2023-03-09, rust version 1.68.0 (2c8cc3432 2023-03-06)
info: downloading component 'cargo'
info: downloading component 'clippy'
... etc

HOW JUMP THIS DOWNLOAD ?? (I already have it in the cargo folder)

8

Oh, there's also ~/.rustup/ dir.

1 Like