• <摘录>CentOS怎么查看某个命令的源代码


    安装yumdownloader工具:

    # yum install yum-utils


    设置源:
    [base-src]
    name=CentOS-5.4 - Base src -
    baseurl=http://vault.centos.org/5.4/os/SRPMS/
    #mirrorlist=http://mirrorlist.centos.org/?release=5.4&arch=SRPMS&repo=os
    gpgcheck=1
    gpgkey=http://vault.centos.org/RPM-GPG-KEY-CentOS-5


    [updates-src]
    name=CentOS-5.4 - Updates src-centos
    baseurl=http://vault.centos.org/5.4/updates/SRPMS/
    #mirrorlist=http://mirrorlist.centos.org/?release=5.4&arch=SRPMS&repo=updates
    gpgcheck=1
    gpgkey=http://vault.centos.org/RPM-GPG-KEY-CentOS-5


    #packages used/produced in the build but not released
    [addons-src]
    name=CentOS-5.4 - Addons src -
    baseurl=http://vault.centos.org/5.4/addons/SRPMS/
    #mirrorlist=http://mirrorlist.centos.org/?release=5.4&arch=SRPMS&repo=addons
    gpgcheck=1
    gpgkey=http://vault.centos.org/RPM-GPG-KEY-CentOS-5


    #additional packages that may be useful
    [extras-src]
    name=CentOS-5.4 - Extras src-centos
    baseurl=http://vault.centos.org/5.4/extras/SRPMS/
    #mirrorlist=http://mirrorlist.centos.org/?release=5.4&arch=SRPMS&repo=extras
    gpgcheck=1
    gpgkey=http://vault.centos.org/RPM-GPG-KEY-CentOS-5


    #additional packages that extend functionality of existing packages
    [centosplus-src]
    name=CentOS-5.4 - Plus src-centos
    baseurl=http://vault.centos.org/5.4/centosplus/SRPMS/
    #mirrorlist=http://mirrorlist.centos.org/?release=5.4&arch=SRPMS&repo=centosplus
    gpgcheck=1
    enabled=0
    gpgkey=http://vault.centos.org/RPM-GPG-KEY-CentOS-5


    #contrib - packages by Centos Users
    [contrib-src]
    name=CentOS-5.4 - Contrib src-centos
    baseurl=http://vault.centos.org/5.4/contrib/SRPMS/
    #mirrorlist=http://mirrorlist.centos.org/?release=5.4&arch=SRPMS&repo=contrib
    gpgcheck=1
    enabled=0
    gpgkey=http://vault.centos.org/RPM-GPG-KEY-CentOS-5

    怎么查看某个命令的源代码

    比如想查看uname这个命令的源代码

    [root@localhost usr]# whereis uname

    uname: /bin/uname /usr/share/man/man1/uname.1.gz /usr/share/man/man2/uname.2.gz /usr/share/man/man1p/uname.1p.gz /usr/share/man/man3p/uname.3p.gz

    [root@localhost usr]# rpm -qf /bin/uname

    coreutils-8.5-7.fc14.i686

    ##没有yumdownloader 的话可以这样子安装#yum install yum-utils

    [workhard@localhost tmp]$ yumdownloader --source coreutils-8.5-7.fc14.i686 ##source下载源码包

    到这一步后有两种方法可以查看到源码包,第一种方法

    [workhard@localhost tmp]$ rpm -qpl coreutils-8.5-7.fc14.src.rpm | grep tar ##查询rpm中的 tar文件,源码一般放在这里

    coreutils-8.5.tar.xz

    ##rpm包中提取指定的文件

    [workhard@localhost tmp]$ rpm2cpio coreutils-8.5-7.fc14.src.rpm | cpio -idv coreutils-8.5.tar.xz

    coreutils-8.5.tar.xz

    9446 blocks

    [workhard@localhost coreutils-8.5]$ tar xjvf coreutils-8.5.tar.xz

    ##到解压出来的coreutils-8.5/src/中就能找到相关的源码了

    第二种方法:安装源码包

    [workhard@localhost tmp]$ rpm -i coreutils-8.5-7.fc14.src.rpm ##安装源码包

    warning: user mockbuild does not exist - using root

    warning: group mockbuild does not exist - using root

    ##centosrhel一般安装后的源码在/usr/src/redhat下的各个目录下,fedora是在~/rpmbuild/SOURCES/

    ##可以通过locate命令查询代码包被安装到哪里了

    [workhard@localhost tmp]$ locate *coreutils*tar*

    /home/workhard/tmp/coreutils-8.5.tar.xz

    /home/workhard/rpmbuild/SOURCES/coreutils-8.5.tar.xz

    [workhard@localhost tmp]$ cd /home/workhard/rpmbuild/SOURCES/c

    [workhard@localhost SOURCES]$ tar Jxvf coreutils-8.5.tar.xz

    [workhard@localhost src]$ cd coreutils-8.5/src/

    [workhard@localhost src]$ ll uname*

    -rw-r--r--. 1 workhard workhard 48 Jan 1 2010 uname-arch.c

    -rw-r--r--. 1 workhard workhard 10024 Jan 1 2010 uname.c

    -rw-r--r--. 1 workhard workhard 146 Jan 1 2010 uname.h

    -rw-r--r--. 1 workhard workhard 49 Jan 1 2010 uname-uname.c

    安装*.src.rpm后怎么卸载

    [workhard@localhost SOURCES]$ cd /home/workhard/rpmbuild/SOURCES

    [workhard@localhost SPECS]$ rpmbuild --rmsource --rmspec coreutils.spec

    **相关说明

    一、yumdownloader comes from the yum-utils package, if you don't have that installed already.

    #yum install yum-utils

    二、RPM用法

    rpm {-i|--install} [install-options] PACKAGE_FILE ...

    -f, --file FILE

    Query package owning FILE.

    -p, --package PACKAGE_FILE

    Query an (uninstalled) package PACKAGE_FILE.

    -l, --list

    List files in package.

    qf:查找指定文件属于哪个RPM软件包

    qpl:列出RPM软件包内的文件信息;

    三、rpm2cpio - Extract cpio archive from RPM Package Manager (RPM) package.

    顾名思义,rpm2cpio是将rpm包文件转换成cpio归档文件

    四、CPIO用法

    cpio - copy files to and from archives

    -i 抽取的意思,和"--extract"等同

    -d 建立目录,和"--make-directories"等同

    -v 冗余信息输出,和"--verbose"等同

    五、rpmbuild用法

    --rmsource

    Remove the sources after the build

    --rmspec

    Remove the spec file after the build

  • 相关阅读:
    VS Code中编写C
    Latex
    JAVA学习-----容器和数据结构
    Markdown2最最基本操作说明(未完待续)
    [lua] table.sort(_table, comp)使用要点
    [coco2d]pageView:addPage时,page无法对齐
    [cocos2d]修改富文本文本和高度
    [cocos2d]格式化获取当前layer的控件名
    [c++]牛客刷题记录2.18
    [c++]STL学习
  • 原文地址:https://www.cnblogs.com/hummersofdie/p/3964260.html
Copyright © 2020-2023  润新知