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How do I use the lines of a file as arguments of a command?
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If your shell is bash (amongst others), a shortcut for $(cat afile) is $(< afile), so you'd write:
mycommand "$(< file.txt)"
Documented in the bash man page in the 'Command Substitution' section.
Alterately, have your command read f...
How do you run a crontab in Cygwin on Windows?
...are .exe files, so you can run them with the standard Windows Scheduler, but others don't have an .exe extension so can't be run from DOS (it seems like).
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How to dynamically create CSS class in JavaScript and apply?
...ynamically in JavaScript and assign it to some HTML elements like - div, table, span, tr, etc and to some controls like asp:Textbox, Dropdownlist and datalist.
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What does the “|” (single pipe) do in JavaScript?
Why does 0.5 | 0 return zero, but any integer (including negative) returns the input integer? What does the single pipe ("|") do?
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How can I convert an RGB image into grayscale in Python?
I'm trying to use matplotlib to read in an RGB image and convert it to grayscale.
12 Answers
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String concatenation in Ruby
I am looking for a more elegant way of concatenating strings in Ruby.
16 Answers
16
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Why are variables “i” and “j” used for counters?
I know this might seem like an absolutely silly question to ask, yet I am too curious not to ask...
23 Answers
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Specify pane percentage in tmuxinator project
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The layout should be specified in the layout: line. But you are not limited to the five preset layouts (such as main-vertical). From the man page:
In addition, select-layout may be used to apply a previously used layout -
the list-windows co...
Useless use of cat?
This is probably in many FAQs - instead of using:
9 Answers
9
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Unable to Cast from Parent Class to Child Class
I am trying to cast from a parent class to a child class but I get an InvalidCastException. The child class only has one property of type int. Does anyone know what I need to do?
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