execute git blame command in java

I’m trying to use the following Java syntax to execute a Git blame command:

Process process = Runtime.getRuntime().exec("/usr/bin/git blame https://github.com/git/git/alloc.c > TestGit.txt");

But, when I run the code in Java, it doesn’t give any result. And, when I tried to execute it in the Terminal, it just creates an empty “TestGit.txt” file, and I got the error: fatal: Not a git repository (or any of the parent directories): .git.

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  • 4 Solutions collect form web for “execute git blame command in java”

    Be sure to change directories into the git repository prior to launching the command

    Process process = Runtime.getRuntime().exec("cd /path/to/repository; /usr/bin/git blame https://github.com/git/git/alloc.c > TestGit.txt");

    I think for git blame to work, you’ll need to be inside the repository. You’d need to be inside the repository directory (which means you’ll need to check it out first), and run:

    git blame alloc.c

    The following is the right syntax to execute blame command in Java for linux:

    git --git-dir=/home/gh/git/.git --work-tree=/home/gh/git blame builtin/tag.c

    The javier way:

    Process process = Runtime.getRuntime().exec("/usr/bin/git blame https://github.com/git/git/alloc.c > TestGit.txt", null, new File('/path/to/repository'));
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