Installation of .NET 3.0 and 3.5 will fail on Ubuntu 12.04 due to a known bug which can easily be worked around by running the following command in terminal:
$ echo 0|sudo tee /proc/sys/kernel/yama/ptrace_scope
and then try running the installation of .NET, again. If this works, you can
make this change permanent by editing the ptrace conf file in sysctl:
$ sudo gedit /etc/sysctl.d/10-ptrace.conf
"gedit" can be replaced with your text editor of choice
and changing
kernel.yama.ptrace_scope = 1
to
kernel.yama.ptrace_scope = 0
If you don't wish to make this change permanent, you'll just need to run
the first command, above, after each reboot of your machine when appropriate.
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Jack Phinney on 2012-05-30 10:09:36
