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How to 'grep' a continuous stream?
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Turn on grep's line buffering mode when using BSD grep (FreeBSD, Mac OS X etc.)
tail -f file | grep --line-buffered my_pattern
You don't need to do this for GNU grep (used on pretty much any Linux) as it will flush by default (YMMV for other Unix-likes such as SmartOS, AIX or QNX).
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Why Maven uses JDK 1.6 but my java -version is 1.7
... yes,you answer is correct .The JAVAHOME is required.I edit the /etc/profile instead
– Ninja
Oct 13 '13 at 14:36
8
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Converting string from snake_case to CamelCase in Ruby
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In order to use these methods of Rails from pure Ruby, require "active_support/core_ext/string" is suffice, providing Rails is installed already.
– Masa Sakano
Jun 23 '18 at 2:03
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demystify Flask app.secret_key
...he event, discard the cookie, issue a fresh one, redirect to a login page, etc.
>>> if not good_cookie:
... security_log(cookie)
Hash-based Message Authentication Code (HMAC)
The type of signature generated above that requires a secret key to ensure the integrity of some contents is...
Git: How to update/checkout a single file from remote origin master?
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It is possible to do (in the deployed repository)
git fetch
git checkout origin/master -- path/to/file
The fetch will download all the recent changes, but it will not put it in your current checked out code (working area).
The checkout will update the working tree with the par...
removeEventListener on anonymous functions in JavaScript
...eserves the advantages of anonymous functions (not polluting the namespace etc.).
– bompf
Sep 7 '12 at 10:23
3
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Visual Studio Expand/Collapse keyboard shortcuts [duplicate]
...M or CTRL + M + O to collapse all code blocks, regions, namespaces, etc.
7 Answers
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Remove all subviews?
...moveFromSuperview()
}
NOTE
You should NOT remove the subviews in normal order, since it may cause a crash if a UIView instance is deleted before the removeFromSuperview message has been sent to all objects of the array. (Obviously, deleting the last element would not cause a crash)
Therefore, t...
Is there a way to make a PowerShell script work by double clicking a .ps1 file?
...ith administrator rights):
<#
.SYNOPSIS
Change the registry key in order that double-clicking on a file with .PS1 extension
start its execution with PowerShell.
.DESCRIPTION
This operation bring (partly) .PS1 files to the level of .VBS as far as execution
through Explorer.exe is ...
All combinations of a list of lists
...nations: (7,4,1),(8,4,1),(9,4,1),(10,4,1),(7,5,1),(8,5,1),(9,5,1),(10,5,1) etc?
– Reman
Feb 17 '16 at 15:19
1
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