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cd into directory without having permission
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@user812954's answer was quite helpful, except I had to do this this in two steps:
sudo su
cd directory
Then, to exit out of "super user" mode, just type exit.
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Grouping functions (tapply, by, aggregate) and the *apply family
... <- matrix(seq(1,16), 4, 4)
# apply min to rows
apply(M, 1, min)
[1] 1 2 3 4
# apply max to columns
apply(M, 2, max)
[1] 4 8 12 16
# 3 dimensional array
M <- array( seq(32), dim = c(4,4,2))
# Apply sum across each M[*, , ] - i.e Sum across 2nd and 3rd dimension
apply(M, 1, sum)
# Result ...
How do I find out which computer is the domain controller in Windows programmatically?
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254
With the most simple programming language: DOS batch
echo %LOGONSERVER%
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How do I pass multiple parameters in Objective-C?
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121
Objective-C doesn't have named parameters, so everything on the left side of a colon is part of...
How to synchronize a static variable among threads running different instances of a class in Java?
...e keyword before a method brings synchronization to that object. That is, 2 threads running the same instance of the object will be synchronized.
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Converting PKCS#12 certificate into PEM using OpenSSL
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Try:
openssl pkcs12 -in path.p12 -out newfile.crt.pem -clcerts -nokeys
openssl pkcs12 -in path.p12 -out newfile.key.pem -nocerts -nodes
After that you have:
certificate in newfile.crt.pem
private key in newfile.key.pem
To put the certificat...
How to keep Maven profiles which are activeByDefault active even if another profile gets activated?
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edited Aug 1 '16 at 15:28
Kariem
3,21422 gold badges3737 silver badges5454 bronze badges
answered Sep...
How do I copy directories recursively with gulp?
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322
The following works without flattening the folder structure:
gulp.src(['input/folder/**/*']).p...
What is the difference between packaged_task and async
...~future blocks:
std::async(do_work1); // ~future blocks
std::async(do_work2); // ~future blocks
/* output: (assuming that do_work* log their progress)
do_work1() started;
do_work1() stopped;
do_work2() started;
do_work2() stopped;
*/
So if you want real asynchronous you need to k...