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Regular expressions in C: examples?
...ssions in C. The Perl syntax is pretty much that same syntax used in Java, Python, and a number of other languages. The POSIX syntax is the syntax used by grep, sed, vi, etc.
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How can I setup & run PhantomJS on Ubuntu?
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sudo wget https://bitbucket.org/ariya/phantomjs/downloads/phantomjs-1.9.7-linux-x86_64.tar.bz2
sudo tar xjf phantomjs-1.9.7-linux-x86_64.tar.bz2
sudo ln -s /usr/local/share/phantomjs-1.9.7-linux-x86_64/bin/phantomjs /usr/local/share/phantomjs
sudo ln -s /usr/local/share/phantomjs-1.9.7-linux-x86_64...
Where is the itoa function in Linux?
itoa() is a really handy function to convert a number to a string. Linux does not seem to have itoa() , is there an equivalent function or do I have to use sprintf(str, "%d", num) ?
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What is the difference between AF_INET and PF_INET in socket programming?
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I found in Linux kernel source code that PF_INET and AF_INET are the same.
The following code is from file include/linux/socket.h, line 204 of Linux kernel 3.2.21 tree.
/* Protocol families, same as address families. */
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#define PF_...
Linux delete file with size 0 [duplicate]
How do I delete a certain file in linux if its size is 0. I want to execute this in an crontab without any extra script.
8 ...
Is System.nanoTime() completely useless?
...t talks about other platforms, but that article does include a remark that Linux has encountered and solved the same problem in the same way, with a link to the FAQ for clock_gettime(CLOCK_REALTIME), which says:
Is clock_gettime(CLOCK_REALTIME) consistent across all processors/cores? (Does ar...
Find all storage devices attached to a Linux machine [closed]
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you can also try lsblk ... is in util-linux ... but i have a question too
fdisk -l /dev/sdl
no result
grep sdl /proc/partitions
8 176 15632384 sdl
8 177 15628288 sdl1
lsblk | grep sdl
sdl 8:176 1 14.9G 0 disk
`-sdl1 8:...
What is the difference between the kernel space and the user space?
...stinction
In x86 protected mode, the CPU is always in one of 4 rings. The Linux kernel only uses 0 and 3:
0 for kernel
3 for users
This is the most hard and fast definition of kernel vs userland.
Why Linux does not use rings 1 and 2: CPU Privilege Rings: Why rings 1 and 2 aren't used?
How is ...
Understanding Linux /proc/id/maps
I am trying to understand my embedded Linux application's memory use. The /proc/pid/maps utility/file seems to be a good resource for seeing the details. Unfortunately I don't understand all the columns and entries.
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wkhtmltopdf: cannot connect to X server
...been using wkthmltopdf to convert html to pdf documents on-the-fly on my linux web server. The program originally needed X11 or similar X server to run correctly, but through many requests by developers to have this run on servers without GUI, I am pretty sure it runs a virtual X server in the s...