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How I can find out how much /tmp space is required by an application. Generally sometime I see /tmp is full and get error saying not able to write to /tmp. So is there any way to find out how much /tmp space is required by an application ?
There is no way. Programs use /tmp on an ad-hoc basis.
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Closed 2 years ago.
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Hard links cannot span physical devices. Exactly this statement I read while understanding the concept of hard link in Linux. Can anyone help me to understand this ?
A filename, is a pointer to an inode.
So if you're not on the same drive, it's impossible to link a file, because the inodes belongs to a specific disk
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I've learned that linux directory is a file. So can I view it in binary mod like viewing other files with hexdump?
You can dump raw portions of a drive using the dd command and that is about as low level as you can get. You can also use debugfs to do maintenance on the filesystem.
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I am making a folder where there are some shared files which can be read and written by anyone (but not executable) in a server. But I don't know what kind of owner and group are used for the files. Are there any special or well known owner or group for the purpose? Thank you very much.
The best approach to do this would be to use:
chmod 110
This will change file permission to read & write, no execute
linuxcommand.org/lts0070
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Closed 7 years ago.
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I want to know the purpose of each folder in the root directory of linux/mac, like /var, /etc, /usr, /opt, etc. Can anybody shed some light?
Read the File Hierarchy Standard (at least for Linux). See also this and the Linux standard base.
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Closed 8 years ago.
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I want to modify sched.h to add in some scheduling algorithm. I use find / -name sched.h command finding a lot of results.But which one should I really modify ?
And in /usr/src,there are a lot of relating folders whose names are similiar. I'm using ubuntu14.04. Where are my real source code?
use uname -a to see which kernel you are currently running. After that, i would edit the /include/linux/sched.h for that kernel.