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How to make the 'cut' command treat same sequental delimiters as one?
...elimiters
offsets from end of line (using negative numbers) in addition to start of line
automatic side-by-side pasting of columns (no need to invoke paste separately)
support for field reordering
a config file where users can change their personal preferences
great emphasis on user friendliness &am...
How do I copy directories recursively with gulp?
...base default is "folder" as given in this answer. In other words, the base starts where the glob pattern begins. This helped me to understand where my files would end up and is also why you don't need the **/* in the gulp.dest parameter. Gulp takes everything in the glob and puts it in the dest fold...
How to create ls in windows command prompt?
...t to your Path variable. Mine was located in C:\Program Files\Git\usr\bin.
Start a command prompt and enjoy ls in all its glory.
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What ports does RabbitMQ use?
...-env.conf
Ask the computer to tell you:
sudo nmap -p 1-65535 localhost
Starting Nmap 5.51 ( http://nmap.org ) at 2014-09-19 13:50 EDT
Nmap scan report for localhost (127.0.0.1)
Host is up (0.00041s latency).
PORT STATE SERVICE
443/tcp open https
5672/tcp open am...
Getting image dimensions without reading the entire file
... (ArgumentException e)
{
if (e.Message.StartsWith(errorMessage))
{
throw new ArgumentException(errorMessage, "path", e);
}
else
{
throw ...
Is it possible to run selenium (Firefox) web driver without a GUI?
...
Yes. You can use HTMLUnitDriver instead for FirefoxDriver while starting webdriver. This is headless browser setup. Details can be found here.
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What's the difference between Perl's backticks, system, and exec?
...erlfunc, because it is a function.
E.g.:
#!/usr/bin/perl
print "Need to start exec command";
my $data2 = exec('ls');
print "Now END exec command";
print "Hello $data2\n\n";
In above code, there are three print statements, but due to exec leaving the script, only the first print statement is exe...
Read file from line 2 or skip header row
How can I skip the header row and start reading a file from line2?
8 Answers
8
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SQL order string as number
...s' | 123
'$123' | 0 /* the left side of the string does not start with a number */
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serve current directory from command line
...rt => 9090, :DocumentRoot => Dir.pwd); trap('INT') { s.shutdown }; s.start"
Even the first command is hard to remember, so I just have this in my .bashrc:
function serve {
port="${1:-3000}"
ruby -run -e httpd . -p $port
}
It serves the current directory on port 3000 by default, but ...