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How to create a CPU spike with a bash command
...
You can also do
dd if=/dev/zero of=/dev/null
To run more of those to put load on more cores, try to fork it:
fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & }; fulload; read; killall dd
Repea...
Java: How to get input from System.console()
... reserve). This way the BufferedInputStream makes less native calls to the OS to read from the file. Thanks
– Learner
Jan 1 '16 at 0:21
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Running script upon login mac [closed]
...h file to run when I log in to my account on my computer. I am running Mac OS X 10.6.7.
3 Answers
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How to print last two columns using awk
...ce>field2, (because it will use white space delimiter by default) as opposed to field1<tab>field2 which is probably what you're expecting. using Output Field Separator (OFS) is almost always what you want.
– DryLabRebel
Aug 6 at 22:51
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How to determine SSL cert expiration date from a PEM encoded certificate?
... command line to list multiple certificates in order of their expiration, most recently expiring first.
for pem in /etc/ssl/certs/*.pem; do
printf '%s: %s\n' \
"$(date --date="$(openssl x509 -enddate -noout -in "$pem"|cut -d= -f 2)" --iso-8601)" \
"$pem"
done | sort
Sample output:...
Duplicate log output when using Python logging module
...ce, which causes the duplicate logs.
Perhaps something like this?
import os
import time
import datetime
import logging
loggers = {}
def myLogger(name):
global loggers
if loggers.get(name):
return loggers.get(name)
else:
logger = logging.getLogger(name)
logger...
How to build for armv6 and armv7 architectures with iOS 5
In iOS5 Apple drops the armv6 architecture from the ARCHS_STANDARD_32_BIT .
6 Answers
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Threading pool similar to the multiprocessing Pool?
...ssing.dummy which is mentioned briefly in the docs. This dummy module supposedly provides the whole multiprocessing interface based on threads.
share
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How do I wrap text in a UITableViewCell without a custom cell
...FLOAT);
CGSize labelSize = [cellText sizeWithFont:cellFont constrainedToSize:constraintSize lineBreakMode:UILineBreakModeWordWrap];
return labelSize.height + 20;
}
I added 20 to my returned cell height because I like a little buffer around my text.
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How do I parse command line arguments in Bash?
...etopt[s])
Usage demo-space-separated.sh -e conf -s /etc -l /usr/lib /etc/hosts
cat >/tmp/demo-space-separated.sh <<'EOF'
#!/bin/bash
POSITIONAL=()
while [[ $# -gt 0 ]]
do
key="$1"
case $key in
-e|--extension)
EXTENSION="$2"
shift # past argument
shift # past value
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