CODEWITHSUNDEEP
c++linuxwindowsport
I AM
I AM

Reputation: 53

how I get version of a program in linux

In Windows you can do:

CSystemInfo info;
this->m_strVersion = info.GetFileVersion( CFileSystemHelper::GetApplicationPath() + _T("/test.exe") );

to get the version number.

How would I do it in C++ on linux ?

Upvotes: 3

Views: 3176

Answers (2)

Steve-o
Steve-o

Reputation: 12866

Windows adopts a version resource system with standard API support, Linux and UNIX have no such high level concepts for a variety of reasons ranging from legacy to redundancy.

Best options are to query the local packaging system (RPM, APT, etc), or try executing with --version command line parameter which is a recommended GNU standard.

Example RPM query on command line for the Samba tool smbget:

# rpm -q -f /usr/bin/smbget --queryformat '%{version}\n'
3.0.33

Upvotes: 3

Basile Starynkevitch
Basile Starynkevitch

Reputation: 1

You probably want to retrieve the path of the currently executing executable.

On Linux, you could use the /proc/ pseudo-file system. Read the proc(5) man page for more.

Specifically, you probably want to do something like

char myexepath[512];
memset (myexepath, 0, sizeof(myexepath);
readlink ("/proc/self/exe", myexepath, sizeof(myexepath));

(but you really should check for runtime errors above)

If you simply wanted to display the version of a program, you should have a convention about it. Usually accepting --version as the program first argument.

I invite you to read Advanced Linux Programming.

Upvotes: 2

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