Small example: Get source code for Linux built-in commands (which + dpkg + apt-get source)

Demand:

When developing SSVM version management System, think of uname can get the Linux kernel version information, so want to download uname command source code reference to see

Example:

$ which uname [find the location of the uname command]

/bin/uname

$ dpkg-s/bin/uname [find the code in which the uname belongs in the development package]

Coreutils:/bin/uname

$ apt-get Source coreutils [Download the source of the related package]

[When downloading, if the following problems occur, the solution to see below]

[Sh:dpkg-source:not found

Unpack command ' Dpkg-source-x COREUTILS_7.4-2UBUNTU3.DSC ' failed.

Check if the ' Dpkg-dev ' package is installed.

E:child Process failed]

$ sudo apt-get install dpkg-dev-y

$ apt-get Source Coreutils

[After downloading the source, the following file will be generated in the current directory]

coreutils-7.4/

Coreutils_7.4-2ubuntu3.diff.gz

Coreutils_7.4-2ubuntu3.dsc

Coreutils_7.4.orig.tar.gz

$ find. -name uname* [All files beginning with find search uname]

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Small example: Get source code for Linux built-in commands (which + dpkg + apt-get source)