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What is the Linux equivalent to DOS pause?
I have a Bash shell script in which I would like to pause execution until the user presses a key. In DOS, this is easily accomplished with the "pause" command. Is there a Linux equivalent I can use in my script?
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What is a good regular expression to match a URL? [duplicate]
... a version which is less restrictive http://regexr.com/3e6m0.
Example JavaScript implementation:
var expression = /[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)?/gi;
var regex = new RegExp(expression);
var t = 'www.google.com';
if (t.match(regex)) ...
How to insert an element after another element in JavaScript without using a library?
There's insertBefore() in JavaScript, but how can I insert an element after another element without using jQuery or another library?
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How can I use a batch file to write to a text file?
I need to make a script that can write one line of text to a text file in the same directory as the batch file.
7 Answers
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Use JavaScript to place cursor at end of text in text input element
...to place the cursor at the end of the text in a input text element via JavaScript - after focus has been set to the element?
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How do I quickly rename a MySQL database (change schema name)?
...O new_db.table;
You will need to adjust the permissions after that.
For scripting in a shell, you can use either of the following:
mysql -u username -ppassword old_db -sNe 'show tables' | while read table; \
do mysql -u username -ppassword -sNe "rename table old_db.$table to new_db.$table";...
What is Node.js? [closed]
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I think the advantages are:
Web development in a dynamic language (JavaScript) on a VM that is incredibly fast (V8). It is much faster than Ruby, Python, or Perl.
Ability to handle thousands of concurrent connections with minimal overhead on a single process.
JavaScript is perfect for event loop...
Why 0 is true but false is 1 in the shell?
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Bash is a programming (scripting) language, but it's also a shell and a user-interface. If 0 was error, then the program could only present one kind of error.
However in Bash, any nonzero value is an error, and we may use any number from 1-255 to...
Can I run multiple programs in a Docker container?
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There can be only one ENTRYPOINT, but that target is usually a script that launches as many programs that are needed. You can additionally use for example Supervisord or similar to take care of launching multiple services inside single container. This is an example of a docker container ...
SQLite: How do I save the result of a query as a CSV file?
...e sqlite command line, which isn't ideal if you'd like to build a reusable script. Python makes it easy to build a script that can be executed programatically.
import pandas as pd
import sqlite3
conn = sqlite3.connect('your_cool_database.sqlite')
df = pd.read_sql('SELECT * from orders', conn)
df....