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How can I extract audio from video with ffmpeg?
...Command Prompt (Start > Run > CMD) or on a Linux/Mac open a Terminal
cd to the directory with the ffmeg.exe
Issue your command and wait for the output file (or troubleshoot any errors)
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How to create empty text file from a batch file?
...
A 0 bytes file overwriting readonly files
ATTRIB -R filename.ext>NUL
(CD.>filename.ext)2>NUL
idea via: copyitright
A single newline (2 bytes: 0x0D 0x0A in hex notation, alternatively written as \r\n):
echo.>AlmostEmptyFile.txt
Note: no space between echo, . and >.
idea via: H...
Two-dimensional array in Swift
...l array. Thanks a lot! gist.github.com/amiantos/bb0f313da1ee686f4f69b8b44f3cd184
– Brad Root
Jun 8 '19 at 17:51
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Create nice column output in python
..., 'linuxnode-3-3416918', 'For queues and stuff.'],
['app-server', 'b866cd0f-bf80-40c7-84e3-c40891ec68f9', 'linuxnode-4-295918', 'A popular destination.'],
['nginx', '76fea0f0-aa53-4911-b7e4-fae28c2e469b', 'linuxnode-5-292735', 'Traffic Cop'],
]
table = columnar(data, headers, no_borders=Tru...
How to generate all permutations of a list?
...ns. Here's one:
def permutations(iterable, r=None):
# permutations('ABCD', 2) --> AB AC AD BA BC BD CA CB CD DA DB DC
# permutations(range(3)) --> 012 021 102 120 201 210
pool = tuple(iterable)
n = len(pool)
r = n if r is None else r
if r > n:
return
ind...
git: How do I get the latest version of my code?
...
try this code
cd /go/to/path
git pull origin master
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Start two instances of IntelliJ IDE
...s (which creates a binary named "idea"):
Now, go to your command line.
Cd to your project directory and type: idea .
This will create a .idea directory for IntelliJ configurations for that project, which it will re-use each time to start IntelliJ from that directory.
You can now go to a diffe...
Tab key == 4 spaces and auto-indent after curly braces in Vim
...y. It is used for a different purpose.
Step 1: Go to your home directory
cd ~
Step 2: Create the file
vim .vimrc
Step 3: Add the configuration stated above
filetype plugin indent on
set tabstop=4
set shiftwidth=4
set expandtab
Step 3: Save file, by pressing Shift + ZZ.
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How to open emacs inside bash
....hoobly.com/emacs/emacs-25.3.tar.xz
tar -xvzf emacs-25.3.tar.xz && cd emacs-25.3
./configure --without-x
make && sudo make install
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How to generate a random string in Ruby
...m?
require 'securerandom'
random_string = SecureRandom.hex
# outputs: 5b5cd0da3121fc53b4bc84d0c8af2e81 (i.e. 32 chars of 0..9, a..f)
SecureRandom also has methods for:
base64
random_bytes
random_number
see: http://ruby-doc.org/stdlib-1.9.2/libdoc/securerandom/rdoc/SecureRandom.html
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