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Unix command-line JSON parser? [closed]
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You can use this command-line parser (which you could put into a bash alias if you like), using modules built into the Perl core:
perl -MData::Dumper -MJSON::PP=from_json -ne'print Dumper(from_json($_))'
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How can I exclude directories from grep -R?
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SOLUTION 1 (combine find and grep)
The purpose of this solution is not to deal with grep performance but to show a portable solution : should also work with busybox or GNU version older than 2.5.
Use find, for excluding directories foo and bar :
find...
How can I measure the actual memory usage of an application or process?
...r example, Valgrind can give you insights about the amount of memory used, and, more importantly, about possible memory leaks in your program. The heap profiler tool of Valgrind is called 'massif':
Massif is a heap profiler. It performs detailed heap profiling by taking regular snapshots of a prog...
How to get current moment in ISO 8601 format with date, hour, and minute?
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@Joachim The negative side of this "standard" approach is that I have to have many instances of "yyyy-MM-dd'T'HH:mmZ" in my application, every time I need an ISO-8601 formatted date. With JodaTime, as I see, I can use a pre-defined formatter ISODateTimeFormat, wh...
Regular expression to limit number of characters to 10
...ing to write a regular expression that will only allow lowercase letters and up to 10 characters. What I have so far looks like this:
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How to “hibernate” a process in Linux by storing its memory to disk and restoring it later?
... would to write all the memory used by a process to disk, free up the RAM. And then later on, I can 'resume the process', i.e, reading all the data from memory and put it back to RAM and I can continue with my process?
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How do I create my own URL protocol? (e.g. so://…) [closed]
...ocol-name Protocol"
URL Protocol ""
shell/
open/
command/
(Default) PathToExecutable
Sources: https://www.iana.org/assignments/uri-schemes/uri-schemes.xhtml,
http://msdn.microsoft.com/en-us/library/aa767914(v=vs.85).aspx
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Delete/Reset all entries in Core Data?
...ly.
The programmatic way for iterating through each entity is both slower and prone to error. The use for doing it that way is if you want to delete some entities and not others. However you still need to make sure you retain referential integrity or you won't be able to persist your changes.
Ju...
I lose my data when the container exits
Despite Docker's Interactive tutorial and faq I lose my data when the container exits.
11 Answers
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How can I drop all the tables in a PostgreSQL database?
How can I drop all tables in PostgreSQL, working from the command line?
24 Answers
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