free is a command to view various memory stats.

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After deleting a shared folder, Ubuntu doesn't see freed disk space

I'm stuck, after deleting a shared folder (shift+del) I can't get back the disk space previously occupied by the folder (19GB). Full story - I've created a folder for backup and shared it on my local ...
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What is wrong with the memory usage?

I can't figure out what is consuming my memory... Could anyone help me? user@desktop:~$ free total used free shared buffers cached Mem: 8176992 6186776 ...
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can't rum cmake or ompl gui

I'm using Ubuntu 14.4 and the last released library 1.0.0 I'm a beginner first I cant install freeglut3-dev I tried to solve it from other question but doesn't work Installing freeglut3-dev on ...
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The storage cannot up free size after remove log file

I run web application on my Centos server. Now my log tomcat file too large. To remove it,I use command: rm -rf /root/Development/apache-tomcat-7.0.56/logs/catalina.out After removed, I used df ...
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Recovery Menu Problems

Running operations from Recovery Menu in Ubuntu 14.04 is not working. When I press enter on clean ("Try to make free space"), it runs to 62% sometimes then freezes, 31% other times, then freezes, 98% ...