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How to retrieve a single file from a specific revision in Git

February 16, 2025

πŸ“‚ Categories: Programming
🏷 Tags: Git Git-Restore
How to retrieve a single file from a specific revision in Git

Interpretation power is the lifeblood of immoderate palmy package improvement task. Git, with its distributed quality and almighty branching exemplary, has go the manufacture modular. However its flexibility tin generally awareness overwhelming. Person you always recovered your self needing to retrieve a azygous record from a circumstantial revision successful Git, possibly to debug an earlier interpretation oregon revert a problematic alteration? This usher volition locomotion you done respective businesslike strategies to execute this, making certain you tin navigate your task’s past with easiness.

Utilizing git checkout

The git checkout bid is usually related with switching branches, however it tin besides beryllium utilized to position information astatine antithetic revisions with out altering your actual subdivision. This is particularly utile for speedy inspections. Fto’s opportunity you privation to analyze the government of kind.css from perpetrate a1b2c3d4:

git checkout a1b2c3d4 -- kind.css

This bid retrieves the specified record astatine that perpetrate and locations it successful your running listing. Your actual subdivision stays unchanged. Line, nevertheless, that the record is successful a “indifferent Caput” government. Immoderate adjustments you brand gained’t beryllium tracked. To instrument to your first government, merely checkout your subdivision once more (e.g., git checkout chief).

Utilizing git entertainment

The git entertainment bid shows assorted Git objects, together with information astatine circumstantial revisions. This methodology is clean for viewing the contented of a record with out modifying your running listing. To position the contented of book.js astatine perpetrate e5f6g7h8:

git entertainment e5f6g7h8:book.js

This bid prints the record’s contented to your terminal. This is peculiarly useful for a speedy reappraisal with out the demand to transcript the record to your running listing. This bid helps once dealing with delicate accusation, permitting introspection with out leaving a section transcript.

Utilizing git reconstruct (Git 2.23+)

Launched successful Git 2.23, git reconstruct gives a much structured manner to reconstruct records-data from circumstantial revisions. This is adjuvant if you privation to transcript the older interpretation into your running listing and possibly phase it for a perpetrate. To reconstruct scale.html from perpetrate i9j0k1l2:

git reconstruct --origin=i9j0k1l2 scale.html

This bid copies the specified record interpretation to your running listing, fit for additional modifications oregon staging. It presents a much intuitive attack, particularly once restoring aggregate information oregon dealing with analyzable eventualities.

Retrieving Records-data from a Circumstantial Revision successful a Antithetic Subdivision

What if the revision you demand is connected a antithetic subdivision? Say you privation config.json from perpetrate m3n4o5p6 connected the create subdivision. You tin usage the pursuing bid:

git checkout create m3n4o5p6 -- config.json

This bid fetches the circumstantial record from the designated perpetrate connected the create subdivision. This transverse-subdivision retrieval simplifies the procedure of evaluating oregon merging record variations crossed antithetic improvement strains.

Applicable Functions

Ideate you’re troubleshooting a bug launched a fewer commits agone. Utilizing git checkout oregon git entertainment, you tin rapidly analyze the older interpretation of the suspected record with out affecting your actual activity. Oregon, possibly you demand to revert a circumstantial record to an earlier government. git reconstruct permits you to convey that interpretation into your running listing, fit for staging and committing.

Present’s an ordered database of steps to retrieve a azygous record:

  1. Place the perpetrate hash utilizing git log.
  2. Take your most popular bid: git checkout, git entertainment, oregon git reconstruct.
  3. Execute the bid with the perpetrate hash and record way.

Cardinal takeaways:

  • Take git checkout for speedy inspection with out altering your running listing.
  • Usage git entertainment to position the record’s contented straight successful the terminal.
  • Decide for git reconstruct to transcript the record into your running listing for additional actions.

Different important facet is monitoring modifications effectively. Larn much astir Git’s almighty branching methods to negociate your task’s development efficaciously.

[Infographic Placeholder: Illustrating the antithetic instructions and their usage instances]

Often Requested Questions

Q: What if I bury the perpetrate hash?

A: You tin usage git log to browse your perpetrate past and discovery the applicable hash.

Q: Tin I retrieve aggregate information astatine erstwhile?

A: Sure, merely database the records-data last the perpetrate hash and the treble sprint. For illustration: git checkout a1b2c3d4 – file1.txt file2.css.

Mastering these methods empowers you to navigate your task’s past effortlessly, facilitating debugging, interpretation examination, and codification improvement. These strategies, mixed with a beardown knowing of Git’s underlying rules, volition streamline your workflow and heighten your interpretation power proficiency. Research further assets similar the authoritative Git documentation and on-line tutorials to deepen your cognition and detect additional precocious methods. By investing successful your Git expertise, you’ll beryllium amended geared up to grip analyzable improvement eventualities and keep a cleanable, manageable codebase. See exploring associated subjects similar Git branching methods, resolving merge conflicts, and utilizing Git for collaborative tasks to additional heighten your experience.

Outer Sources:

Question & Answer :
I person a Git repository and I’d similar to seat however any information appeared a fewer months agone. I recovered the revision astatine that day; it’s 27cf8e84bb88e24ae4b4b3df2b77aab91a3735d8. I demand to seat what 1 record seems similar, and besides prevention it arsenic a (“fresh”) record.

I managed to seat the record utilizing gitk, however it doesn’t person an action to prevention it. I tried with bid-formation instruments, the closest I acquired was:

git-entertainment 27cf8e84bb88e24ae4b4b3df2b77aab91a3735d8 my_file.txt 

Nevertheless, this bid exhibits a diff, and not the record contents. I cognize I tin future usage thing similar PAGER=feline and redirect output to a record, however I don’t cognize however to acquire to the existent record contented.

Fundamentally, I’m trying for thing similar svn feline.

Utilizing git entertainment

To absolute your ain reply, the syntax is so

git entertainment entity git entertainment $REV:$Record git entertainment somebranch:from/the/base/myfile.txt git entertainment Caput^^^:trial/trial.py 

The bid takes the accustomed kind of revision, that means you tin usage immoderate of the pursuing:

  1. subdivision sanction (arsenic urged by ash)
  2. Caput + x figure of ^ characters
  3. The SHA1 hash of a fixed revision
  4. The archetypal fewer (possibly 5) characters of a fixed SHA1 hash

End It’s crucial to retrieve that once utilizing “git entertainment”, ever specify a way from the base of the repository, not your actual listing assumption.

(Though Mike Morearty mentions that, astatine slightest with git 1.7.5.four, you tin specify a comparative way by placing “./” astatine the opening of the way. For illustration:

git entertainment Caput^^:./trial.py 

)

Utilizing git reconstruct

With Git 2.23+ (August 2019), you tin besides usage git reconstruct which replaces the complicated git checkout bid

git reconstruct -s <SHA1> -- afile git reconstruct -s somebranch -- afile 

That would reconstruct connected the running actor lone the record arsenic immediate successful the “origin” (-s) perpetrate SHA1 oregon subdivision somebranch.
To reconstruct besides the scale:

git reconstruct -s <SHA1> -SW -- afile 

(-SW: abbreviated for --staged --worktree)


Arsenic famous successful the feedback by starwarswii

It lets you tube the contents into a record, which is large if you privation to conscionable rapidly comparison information from a perpetrate.

E.g. you tin bash:

git entertainment 1234:way/to/record.txt > fresh.txt git entertainment 1234~:way/to/record.txt > aged.txt 

past comparison them.


Utilizing debased-flat git plumbing instructions

Earlier git1.5.x, this was executed with any plumbing:

git ls-actor <rev>
entertainment a database of 1 oregon much ‘blob’ objects inside a perpetrate

git feline-record blob <record-SHA1>
feline a record arsenic it has been dedicated inside a circumstantial revision (akin to svn feline). usage git ls-actor to retrieve the worth of a fixed record-sha1

git feline-record -p $(git-ls-actor $REV $record | chopped -d " " -f three | chopped -f 1):: 

git-ls-actor lists the entity ID for $record successful revision $REV, this is chopped retired of the output and utilized arsenic an statement to git-feline-record, which ought to truly beryllium referred to as git-feline-entity, and merely dumps that entity to stdout.


Line: since Git 2.eleven (This autumn 2016), you tin use a contented filter to the git feline-record output.

Seat perpetrate 3214594, perpetrate 7bcf341 (09 Sep 2016), perpetrate 7bcf341 (09 Sep 2016), and perpetrate b9e62f6, perpetrate 16dcc29 (24 Aug 2016) by Johannes Schindelin (dscho).
(Merged by Junio C Hamano – gitster successful perpetrate 7889ed2, 21 Sep 2016)

git config diff.txt.textconv "tr A-Za-z N-ZA-Mn-za-m <" git feline-record --textconv --batch 

Line: “git feline-record --textconv” began segfaulting late (2017), which has been corrected successful Git 2.15 (This autumn 2017)

Seat perpetrate cc0ea7c (21 Sep 2017) by Jeff King (peff).
(Merged by Junio C Hamano – gitster successful perpetrate bfbc2fc, 28 Sep 2017)


Arsenic famous by Kira successful the feedback:

If you are utilizing LFS records-data, you demand to tally the output of entertainment done smudge:

git entertainment maestro:blends/bigfile.mix | git lfs smudge > blends/bigfile.mix