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Delete empty lines using sed
...ys 0m0.006s Would you know of a nifty way to include this into an awk-script like, e.g., a pattern? awk '/mypattern/ {do stuff...}'
– Bernie Reiter
Feb 27 '17 at 22:17
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Restoring MySQL database from physical files
Is it possible to restore a MySQL database from the physical database files. I have a directory that has the following file types:
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What is difference between monolithic and micro kernel?
... kernel can invoke functions directly. Examples of monolithic kernel based OSs: Unix, Linux.
In microkernels, the kernel is broken down into separate processes, known as servers. Some of the servers run in kernel space and some run in user-space. All servers are kept separate and run in different a...
Restore the state of std::cout after manipulating it
Suppose I have a code like this:
8 Answers
8
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Difference between malloc and calloc?
..., while malloc() leaves the memory uninitialized.
For large allocations, most calloc implementations under mainstream OSes will get known-zeroed pages from the OS (e.g. via POSIX mmap(MAP_ANONYMOUS) or Windows VirtualAlloc) so it doesn't need to write them in user-space. This is how normal malloc ...
Reference: mod_rewrite, URL rewriting and “pretty links” explained
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Introducing shortcuts like http://example.com/article/531 to existing PHP scripts is also easy. The numeric placeholder can just be remapped to a $_GET parameter:
RewriteRule ^article/(\d+)$ article-show.php?id=$1
# └─────────────────...
Negation in Python
...herefore just replace your ! with not.
For your example, do this:
if not os.path.exists("/usr/share/sounds/blues") :
proc = subprocess.Popen(["mkdir", "/usr/share/sounds/blues"])
proc.wait()
For your specific example (as Neil said in the comments), you don't have to use the subprocess ...
Why Maven uses JDK 1.6 but my java -version is 1.7
..., but I think the best way to handle JDK versions on MacOS is by using the script described at: http://www.jayway.com/2014/01/15/how-to-switch-jdk-version-on-mac-os-x-maverick/
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static linking only some libraries
...epeat until you've processed the entire link command line. Optionally the script can also take a list of library names to exclude from static linking.
The following bash script seems to do the trick:
#!/bin/bash
if [ $# -eq 0 ]; then
echo "Usage: $0 [--exclude <lib_name>]. . . <link...
git pull aborted with error filename too long
... There are a few updates, looks like there is some additional script you need to run after installing mysysgit github.com/msysgit/git/pull/122#issuecomment-43653756
– Adam Grant
Aug 1 '14 at 18:36
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