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Is there an easy way to print the GTK and QT versions installed on a system? I am wanting to make a script that will print the version numbers of various developer tools and libraries.

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Ask pkg-config.

$ pkg-config --modversion gtk+-2.0
2.24.18
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  • It would be good that it also handle if libraries aren't installed.
    – Braiam
    Jul 6 '13 at 23:50
  • Using pkg-config on a non-existent .pc file results in a non-zero return code. Jul 6 '13 at 23:51
  • I am writing the code like this (pkg-config --modversion gtk+-3.0 2>/dev/null || echo "GTK3 is not installed") Jul 6 '13 at 23:52
  • @IgnacioVazquez-Abrams, thanks. This command is excellent. Jul 6 '13 at 23:52
  • If you're only testing for presence and not the specific version then you don't need to pass --modversion. Jul 6 '13 at 23:52

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