• git配置文件读取顺序


      作者:zhanhailiang 日期:2014-11-03

    git包括三个配置文件:

    • /etc/gitconfig 文件:系统中对全部用户都普遍适用的配置。

      若使用git config 时用' –system'选项,读写的就是这个文件。

    • ~/.gitconfig 文件:用户文件夹下的配置文件仅仅适用于该用户。若使用git config 时用' –global'选项,读写的就是这个文件。
    • 当前项目的git 文件夹中的配置文件(也就是工作文件夹中的.git/config 文件):这里的配置只针对当前项目有效。

      每个级别的配置都会覆盖上层的同样配置,所以.git/config 里的配置会覆盖/etc/gitconfig 中的同名变量。

    能够通过git config –list查看当前配置:

    [root@~/wade/git/node-lessons]# git config --list
    core.repositoryformatversion=0
    core.filemode=true
    core.bare=false
    core.logallrefupdates=true
    remote.origin.fetch=+refs/heads/*:refs/remotes/origin/*
    remote.origin.url=https://github.com/alsotang/node-lessons.git
    branch.master.remote=origin
    branch.master.merge=refs/heads/master

    我们也能够通过strace来检验git配置文件的载入顺序:

    [root@~/wade/git/node-lessons]# strace git config --list
    execve("/usr/bin/git", ["git", "config", "--list"], [/* 27 vars */]) = 0
    brk(0)                                  = 0x151a000
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82cd66c000
    access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
    open("/etc/ld.so.cache", O_RDONLY)      = 3
    fstat(3, {st_mode=S_IFREG|0644, st_size=30968, ...}) = 0
    mmap(NULL, 30968, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f82cd664000
    close(3)                                = 0
    open("/lib64/libz.so.1", O_RDONLY)      = 3
    read(3, "177ELF2113>1 !3403611"..., 832) = 832
    fstat(3, {st_mode=S_IFREG|0755, st_size=91096, ...}) = 0
    mmap(0x31f1e00000, 2183696, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x31f1e00000
    mprotect(0x31f1e15000, 2093056, PROT_NONE) = 0
    mmap(0x31f2014000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x14000) = 0x31f2014000
    close(3)                                = 0
    open("/lib64/libpthread.so.0", O_RDONLY) = 3
    read(3, "177ELF2113>1340] 3611"..., 832) = 832
    fstat(3, {st_mode=S_IFREG|0755, st_size=145896, ...}) = 0
    mmap(0x31f1200000, 2212848, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x31f1200000
    mprotect(0x31f1217000, 2097152, PROT_NONE) = 0
    mmap(0x31f1417000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x17000) = 0x31f1417000
    mmap(0x31f1419000, 13296, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x31f1419000
    close(3)                                = 0
    open("/lib64/libc.so.6", O_RDONLY)      = 3
    read(3, "177ELF21133>1p3563413601"..., 832) = 832
    fstat(3, {st_mode=S_IFREG|0755, st_size=1926680, ...}) = 0
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82cd663000
    mmap(0x31f0e00000, 3750152, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x31f0e00000
    mprotect(0x31f0f8a000, 2097152, PROT_NONE) = 0
    mmap(0x31f118a000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18a000) = 0x31f118a000
    mmap(0x31f118f000, 18696, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x31f118f000
    close(3)                                = 0
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82cd662000
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82cd661000
    arch_prctl(ARCH_SET_FS, 0x7f82cd662700) = 0
    mprotect(0x31f2014000, 4096, PROT_READ) = 0
    mprotect(0x31f1417000, 4096, PROT_READ) = 0
    mprotect(0x31f118a000, 16384, PROT_READ) = 0
    mprotect(0x31f0c1f000, 4096, PROT_READ) = 0
    munmap(0x7f82cd664000, 30968)           = 0
    set_tid_address(0x7f82cd6629d0)         = 25648
    set_robust_list(0x7f82cd6629e0, 0x18)   = 0
    futex(0x7fffa73c199c, FUTEX_WAKE_PRIVATE, 1) = 0
    futex(0x7fffa73c199c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1, NULL, 7f82cd662700) = -1 EAGAIN (Resource temporarily unavailable)
    rt_sigaction(SIGRTMIN, {0x31f1205c60, [], SA_RESTORER|SA_SIGINFO, 0x31f120f710}, NULL, 8) = 0
    rt_sigaction(SIGRT_1, {0x31f1205cf0, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x31f120f710}, NULL, 8) = 0
    rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
    getrlimit(RLIMIT_STACK, {rlim_cur=10240*1024, rlim_max=RLIM_INFINITY}) = 0
    brk(0)                                  = 0x151a000
    brk(0x153b000)                          = 0x153b000
    getcwd("/root/wade/git/node-lessons", 4096) = 28
    stat(".git", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
    access(".git/objects", X_OK)            = 0
    access(".git/refs", X_OK)               = 0
    lstat(".git/HEAD", {st_mode=S_IFREG|0644, st_size=23, ...}) = 0
    open(".git/HEAD", O_RDONLY)             = 3
    read(3, "ref: refs/heads/master
    ", 255) = 23
    read(3, "", 232)                        = 0
    close(3)                                = 0
    access("/etc/gitconfig", R_OK)          = 0
    open("/etc/gitconfig", O_RDONLY)        = 3
    fstat(3, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82cd66b000
    read(3, "", 4096)                       = 0
    close(3)                                = 0
    munmap(0x7f82cd66b000, 4096)            = 0
    access("/root/.gitconfig", R_OK)        = 0
    open("/root/.gitconfig", O_RDONLY)      = 3
    fstat(3, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82cd66b000
    read(3, "", 4096)                       = 0
    close(3)                                = 0
    munmap(0x7f82cd66b000, 4096)            = 0
    stat(".git", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
    access(".git/config", R_OK)             = 0
    open(".git/config", O_RDONLY)           = 3
    fstat(3, {st_mode=S_IFREG|0644, st_size=269, ...}) = 0
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82cd66b000
    read(3, "[core]
    	repositoryformatversion "..., 4096) = 269
    read(3, "", 4096)                       = 0
    close(3)                                = 0
    munmap(0x7f82cd66b000, 4096)            = 0
    access("/etc/gitconfig", R_OK)          = 0
    open("/etc/gitconfig", O_RDONLY)        = 3
    fstat(3, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82cd66b000
    read(3, "", 4096)                       = 0
    close(3)                                = 0
    munmap(0x7f82cd66b000, 4096)            = 0
    access("/root/.gitconfig", R_OK)        = 0
    open("/root/.gitconfig", O_RDONLY)      = 3
    fstat(3, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82cd66b000
    read(3, "", 4096)                       = 0
    close(3)                                = 0
    munmap(0x7f82cd66b000, 4096)            = 0
    access(".git/config", R_OK)             = 0
    open(".git/config", O_RDONLY)           = 3
    fstat(3, {st_mode=S_IFREG|0644, st_size=269, ...}) = 0
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82cd66b000
    read(3, "[core]
    	repositoryformatversion "..., 4096) = 269
    fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 2), ...}) = 0
    mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82cd66a000
    write(1, "core.repositoryformatversion=0
    ", 31core.repositoryformatversion=0
    ) = 31
    write(1, "core.filemode=true
    ", 19core.filemode=true
    )    = 19
    write(1, "core.bare=false
    ", 16core.bare=false
    )       = 16
    write(1, "core.logallrefupdates=true
    ", 27core.logallrefupdates=true
    ) = 27
    write(1, "remote.origin.fetch=+refs/heads/"..., 56remote.origin.fetch=+refs/heads/*:refs/remotes/origin/*
    ) = 56
    write(1, "remote.origin.url=https://github"..., 63remote.origin.url=https://github.com/alsotang/node-lessons.git
    ) = 63
    write(1, "branch.master.remote=origin
    ", 28branch.master.remote=origin
    ) = 28
    write(1, "branch.master.merge=refs/heads/m"..., 38branch.master.merge=refs/heads/master
    ) = 38
    read(3, "", 4096)                       = 0
    close(3)                                = 0
    munmap(0x7f82cd66b000, 4096)            = 0
    fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 2), ...}) = 0
    close(1)                                = 0
    munmap(0x7f82cd66a000, 4096)            = 0
    exit_group(0)                           = ?

    由此能够git配置文件载入顺序为/etc/gitconfig → ~/.gitconfig → .git/config。最后载入的同名配置会覆盖前者载入的配置

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  • 原文地址:https://www.cnblogs.com/jhcelue/p/6756296.html
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