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HMAC-SHA1 in bash
...cript.
[me@home] echo -n "value" | openssl dgst -sha1 -hmac "key"
57443a4c052350a44638835d64fd66822f813319
Or simply:
[me@home] echo -n "value" | openssl sha1 -hmac "key"
57443a4c052350a44638835d64fd66822f813319
Remember to use -n with echo or else a line break character is appended to the str...
How to apply `git diff` patch without Git installed?
...hfile if you need handle file adds, deletes and renames.
EDIT December 2015
Latest versions of patch command (2.7, released in September 2012) support most features of the "diff --git" format, including renames and copies, permission changes, and symlink diffs (but not yet binary diffs) (release...
What is the meaning of “__attribute__((packed, aligned(4))) ”
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160
Before answering, I would like to give you some data from Wiki
Data structure alignment is th...
Is there documentation for the Rails column types?
...STAMP datatype is stored as a unix timestamp. Its valid range goes from 1970 to 2038, and the time is stored as the number of seconds that have elapsed since the last epoch, which is supposedly standard, but in practice can differ from system to system. Recognizing that relative time was not a good ...
android fragment onRestoreInstanceState
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204
Fragments do not have an onRestoreInstanceState method.
You can achieve the same result in onA...
Override ActiveRecord attribute methods
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answered Dec 18 '08 at 22:35
Aaron LongwellAaron Longwell
7,80355 gold badges1818 silver badges1010 bronze badges
...
Does Internet Explorer support pushState and replaceState?
...ormation is CanIUse. Here's the section on history.
Summary - IE9: no, IE10: yes (as of platform preview 3)
The first Release Candidate of IE9 (released 10th Feb 2011) does not support history.pushState or history.replaceState. Generally no new features are added after a product gets to RC stage s...
Is explicitly closing files important?
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answered Sep 13 '11 at 2:00
Peter GrahamPeter Graham
9,62877 gold badges3535 silver badges4040 bronze badges
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Size of font in CSS with slash
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This actually sets two properties and is equivalent to:
font-size: 100%;
line-height: 120%;
To quote the official documentation:
The syntax of this property is based on a traditional typographical shorthand notation to set multiple properties related to fonts.
As David M said in the c...
How to drop multiple columns in postgresql
I want to drop 200 columns in my table in PostgreSQL. I tried:
2 Answers
2
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