git-hash

Difference between PowerShell's echo and CMD's echo

由 安稳与你 提交于 2021-02-05 06:45:46
问题 I get the following in PowerShell: D:\> echo "Apple Pie" | git hash-object --stdin 157cb7be4778a9cfad23b6fb514e364522167053 D:\> "Apple Pie" | git hash-object --stdin 157cb7be4778a9cfad23b6fb514e364522167053 but in CMD.exe: C:\>echo "Apple Pie" | git hash-object --stdin bb3918d5053fea31fc9a58fae1e5bdeabe3ec647 In a PluralSight video, I see a different value from what seems to be a Mac console: What is the exact value piped from echo in each case? I get a different hash if I go to one of those

How does git compute file hashes?

由 别说谁变了你拦得住时间么 提交于 2019-12-17 03:27:47
问题 The SHA1 hashes stored in the tree objects (as returned by git ls-tree ) do not match the SHA1 hashes of the file content (as returned by sha1sum ) $ git cat-file blob 4716ca912495c805b94a88ef6dc3fb4aff46bf3c | sha1sum de20247992af0f949ae8df4fa9a37e4a03d7063e - How does git compute file hashes? Does it compress the content before computing the hash? 回答1: Git prefixes the object with "blob ", followed by the length (as a human-readable integer), followed by a NUL character $ echo -e 'blob 14

How does git compute file hashes?

由 女生的网名这么多〃 提交于 2019-12-17 03:27:13
问题 The SHA1 hashes stored in the tree objects (as returned by git ls-tree ) do not match the SHA1 hashes of the file content (as returned by sha1sum ) $ git cat-file blob 4716ca912495c805b94a88ef6dc3fb4aff46bf3c | sha1sum de20247992af0f949ae8df4fa9a37e4a03d7063e - How does git compute file hashes? Does it compress the content before computing the hash? 回答1: Git prefixes the object with "blob ", followed by the length (as a human-readable integer), followed by a NUL character $ echo -e 'blob 14

How does git compute file hashes?

由 谁说我不能喝 提交于 2019-12-17 03:27:10
问题 The SHA1 hashes stored in the tree objects (as returned by git ls-tree ) do not match the SHA1 hashes of the file content (as returned by sha1sum ) $ git cat-file blob 4716ca912495c805b94a88ef6dc3fb4aff46bf3c | sha1sum de20247992af0f949ae8df4fa9a37e4a03d7063e - How does git compute file hashes? Does it compress the content before computing the hash? 回答1: Git prefixes the object with "blob ", followed by the length (as a human-readable integer), followed by a NUL character $ echo -e 'blob 14

Git objects SHA-1 are file contents or file names?

由 生来就可爱ヽ(ⅴ＜●) 提交于 2019-12-07 10:01:32
问题 I am confused with how a file's actual contents are stored in .git. For e.g. Version 1 is the actual text content in test.txt . When I commit (first commit) it to the repo, git returns a SHA-1 for that file which is located in .git\objects\0c\15af113a95643d7c244332b0e0b287184cd049 . When I open the file 15af113a95643d7c244332b0e0b287184cd049 in a text editor, it's all garbage, something like this x+)JMU074f040031QÐKÏ,ÉLÏË/Je¨}ºõw[Éœ„ÇR­ ñ·Î}úyGª*±8#³¨,1%>9?¯$5¯D¯¤¢„áôÏ3%³þú>š~}Ž÷*ë²-¶ç¡êÊòR

Git objects SHA-1 are file contents or file names?

由 徘徊边缘 提交于 2019-12-05 17:02:14
I am confused with how a file's actual contents are stored in .git. For e.g. Version 1 is the actual text content in test.txt . When I commit (first commit) it to the repo, git returns a SHA-1 for that file which is located in .git\objects\0c\15af113a95643d7c244332b0e0b287184cd049 . When I open the file 15af113a95643d7c244332b0e0b287184cd049 in a text editor, it's all garbage, something like this x+)JMU074f040031QÐKÏ,ÉLÏË/Je¨}ºõw[Éœ„ÇR­ ñ·Î}úyGª*±8#³¨,1%>9?¯$5¯D¯¤¢„áôÏ3%³þú>š~}Ž÷*ë²-¶ç¡êÊòR“KâKòãs+‹sô But I'm not sure whether this garbage represents the encrypted form of the text Version 1 or

Telling if a Git commit is a Merge/Revert commit

由 南笙酒味 提交于 2019-11-29 02:50:45
I am writing a script that requires checking whether a particular commit is a Merge/Revert commit or not, and I am wondering if there is a git trick for that. What I came up with so far (and I definitely don't want to depend on the commit message here) is to check HASH^2 and see if I don't get an error, is there a better way? Figuring out if something is a merge is easy. That's all commits with more than one parent. To check for that, you can do, for example $ git cat-file -p $commit_id If there's more than one `parent' line in the output, you found a merge. For reverts it's not as easy.

How does Git create unique commit hashes, mainly the first few characters?

由 烈酒焚心 提交于 2019-11-29 02:48:50
问题 I find it hard to wrap my head around how Git creates fully unique hashes that aren't allowed to be the same even in the first 4 characters. I'm able to call commits in Git Bash using only the first four characters. Is it specifically decided in the algorithm that the first characters are "ultra"-unique and will not ever conflict with other similar hashes, or does the algorithm generate every part of the hash in the same way? 回答1: Git uses the following information to generate the sha-1: The

Get the current git hash in a Python script

由 北城余情 提交于 2019-11-28 16:01:53
I would like to include the current git hash in the output of a Python script (as a the version number of the code that generated that output). How can I access the current git hash in my Python script? Greg Hewgill The git describe command is a good way of creating a human-presentable "version number" of the code. From the examples in the documentation: With something like git.git current tree, I get: [torvalds@g5 git]$ git describe parent v1.0.4-14-g2414721 i.e. the current head of my "parent" branch is based on v1.0.4, but since it has a few commits on top of that, describe has added the

Telling if a Git commit is a Merge/Revert commit

由 核能气质少年 提交于 2019-11-27 17:08:01
问题 I am writing a script that requires checking whether a particular commit is a Merge/Revert commit or not, and I am wondering if there is a git trick for that. What I came up with so far (and I definitely don't want to depend on the commit message here) is to check HASH^2 and see if I don't get an error, is there a better way? 回答1: Figuring out if something is a merge is easy. That's all commits with more than one parent. To check for that, you can do, for example $ git cat-file -p $commit_id
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