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Assigning default values to shell variables with a single command in bash
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Very close to what you posted, actually:
FOO=${VARIABLE:-default} # If variable not set or null, use default.
Or, which will assign default to VARIABLE as well:
FOO=${VARIABLE:=default} # If variable not set or null, set it to...
Peak memory usage of a linux/unix process
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From the man page: Most information shown by time is derived from the wait3(2) system call. The numbers are only as good as those returned by wait3(2). On systems that do not have a wait3(2) call that returns status information, the times(2) s...
No connection could be made because the target machine actively refused it?
... finite and quite short - values of 1, 2 or 3 are not unusual - and so the OS might be unable to queue your request for the 'accept' to consume.
The backlog is a parameter on the listen function - all languages and platforms have basically the same API in this regard, even the C# one. This paramet...
How to convert a Base64 string into a Bitmap image to show it in a ImageView?
...reat library Glide:
Glide.with(CaptchaFragment.this).load(decodedBytes).crossFade().fitCenter().into(mCatpchaImageView);
This should do the job! It wasted one day on this and came up to this solution!
Note:
If you are still getting bad-base64 error consider other Base64.decode flags like Base64...
SLF4J: Failed to load class “org.slf4j.impl.StaticLoggerBinder”. error
...lib/jvm/java-6-openjdk/jre Default locale: de_DE, platform
encoding: UTF-8 OS name: "linux" version: "2.6.35-32-generic" arch:
"amd64" Family: "unix"
2 Run maven externally link how to run maven from console
> cd path-to-pom.xml
> mvn test
[INFO] Scanning for projects...
[INFO] --...
How can I check if an ip is in a network in Python?
...7.1.1', '172.3.0.0/16') -> True (I converted 'L' to '<L' in my 64bit os)
– Taha Jahangir
Feb 10 '12 at 5:01
20
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How can I make my custom objects Parcelable?
...trying to make my objects Parcelable. However, I have custom objects and those objects have ArrayList attributes of other custom objects I have made.
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Mongod complains that there is no /data/db folder
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Also for me. Installing mongo via homebrew on my OSX doesn't add a mongod user and group.
– Zauker
Sep 23 '16 at 8:41
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How to pre-populate the sms body text via an html link
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It turns out this is 100% possible, though a little hacky.
If you want it to work on Android you need to use this format:
<a href="sms:/* phone number here */?body=/* body text here */">Link</a>
If you want it to work on iOS, you need t...
How to find patterns across multiple lines using grep?
I want to find files that have "abc" AND "efg" in that order, and those two strings are on different lines in that file. Eg: a file with content:
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