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How do I prompt a user for confirmation in bash script? [duplicate]
...g longer strings. In this case they help reinforce the one-character limit set in the read command.
The negated form uses the logical "not" operator (!) to match (=~) any character that is not "Y" or "y". An alternative way to express this is less readable and doesn't as clearly express the intent i...
Reusable library to get human readable version of file size?
... you remove TiB from the list and add an else clause to your for loop that sets unit = "TiB".
– Russell Davis
Jul 16 at 21:30
...
Functional programming vs Object Oriented programming [closed]
...ware evolution:
Object-oriented languages are good when you have a fixed set of operations on things, and as your code evolves, you primarily add new things. This can be accomplished by adding new classes which implement existing methods, and the existing classes are left alone.
Functional langua...
What's a concise way to check that environment variables are set in a Unix shell script?
...shell scripts where I need to check that certain environment variables are set before I start doing stuff, so I do this sort of thing:
...
Why are C# 3.0 object initializer constructor parentheses optional?
...t is precisely because the constructor of the object does not allow you to set the properties you want. It is very common for such objects to simply be "property bags" that have no parameters in the ctor in the first place.
Why then did you not also make empty parentheses optional in the defau...
Removing double quotes from variables in batch file creates problems with CMD environment
...e end of the string (after removing both quotes from the string).
Input:
set widget="a very useful item"
set widget
set widget=%widget:"=%
set widget
Output:
widget="a very useful item"
widget=a very useful item
Note: To replace Double Quotes " with Single Quotes ' do the following:
set widg...
Commenting in a Bash script inside a multiline command
...quirement on the local bash environment:
the parameter name __ must be unset
Any other syntactically valid bash parameter-name will serve in place of __, provided that the name has no set value.
An example script follows
# provide bash inline comments having the form
# <code> ${__+ &...
How do I execute any command editing its file (argument) “in place” using bash?
...
I think if you add set -o pipefail at the beginning of your script, the error on mistyped_command my-important-file would make the script exit immediately, before executing sponge, thus preserving the important file.
– Elo...
Regex expressions in Java, \\s vs. \\s+
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
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else {
createEditor();
...
Detect if stdin is a terminal or pipe?
...s certain capabilities, you can open the
terminal device and (temporarily) set terminal attributes you need
via tcsetattr().
Python Example
The Python code that decides whether the interpreter runs interactively uses isatty(). The Function PyRun_AnyFileExFlags()
/* Parse input from a file and exe...