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Difference between binary semaphore and mutex
...ere any difference between a binary semaphore and mutex or are they essentially the same?
34 Answers
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Which terminal command to get just IP address and nothing else?
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This will give you all IPv4 interfaces, including the loopback 127.0.0.1:
ip -4 addr | grep -oP '(?<=inet\s)\d+(\.\d+){3}'
This will only show eth0:
ip -4 addr show eth0 | grep -oP '(?<=inet\s)\d+(\.\d+){3}'
And this way you can get...
Converting unix timestamp string to readable date
...need a historic timezone database such as provided by pytz module (or your OS). Or just work in UTC and use .utcfromtimestamp().
– jfs
Nov 23 '13 at 1:08
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Java String new line
... The third option is best for portability.
– Amos Bordowitz
Dec 2 '18 at 13:17
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How to stop and restart memcached server?
... well, it realy depends on your linux distribution and how you did install memcache. If you hav installed package of your distribution there should be memcached start/stop script (maybe it is in different directory like /etc/rc.d) If you installed memcached manualy you probably need also create ...
Android notification is not showing
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The code won't work without an icon. So, add the setSmallIcon call to the builder chain like this for it to work:
.setSmallIcon(R.drawable.icon)
Android Oreo (8.0) and above
Android 8 introduced a new requirement of setting the channelId property by using a NotificationChannel...
AngularJs $http.post() does not send data
Could anyone tell me why the following statement does not send the post data to the designated url? The url is called but on the server when I print $_POST - I get an empty array. If I print message in the console before adding it to the data - it shows the correct content.
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Reminder - \r\n or \n\r?
...Mac keyboards, or else you might later look at a PC keyboard, see the key called "Enter," and get the letter order wrong!
– Rob Kennedy
Jun 30 '11 at 19:36
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The difference between fork(), vfork(), exec() and clone()
...d I expected there to be a huge amount of information on this, but there really wasn't any solid comparison between the four calls.
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Kill a Process by Looking up the Port being used by it from a .BAT
...iable (in our case, %%P). delims looks empty, but that extra space is actually significant.
netstat -a -n -o
Just run it and find out. According to the command line help, it "Displays all connections and listening ports.", "Displays addresses and port numbers in numerical form.", and "Displays ...