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1500 questions
195
votes
3 answers

Why does putting a dot after the URL remove login information?

Consider: When I put a dot after the Super User URL, https://superuser.com., it acted like I wasn't signed in. Why is this happening? What does a dot symbolize in the URL?
Riley Carney
  • 1,133
195
votes
5 answers

What's the difference between SCP and SFTP?

Usually, I use the scp command to transfer files on *nixes. What's the difference between SFTP and SCP? Don't they both work on SSH?
nos
  • 4,379
194
votes
9 answers

Why does emptying disk space speed up computers?

I have been looking at a bunch of videos and now understand a bit better how computers work. I better understand what RAM is, volatile and non-volatile memory, and the process of swapping. I also understand why increasing RAM speeds up a computer. I…
Remi.b
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194
votes
10 answers

How do I set up SSH so I don't have to type my password?

How do I set up SSH so I don't have to type my password when connecting to a host?
Richard Hoskins
  • 12,474
194
votes
8 answers

Find outdated/updatable pip packages

pip freeze shows me the packages installed, but how do I check against pypi which ones are outdated?
Xster
  • 2,895
194
votes
14 answers

How do I select all text from a file with nano?

I open a file in Ubuntu nano editor from the comand line and I want to copy all the contents of the file so I can paste it in an another application outside the shell. So far I can only copy using shift on the screen that is visible but not on all…
Elzo Valugi
  • 2,051
193
votes
3 answers

Why are there directories called Local, LocalLow, and Roaming under \Users\\AppData?

I have a workstation running Windows Server 2008 that's logged into an AD domain, and I have a dual boot with Ubuntu Linux. When running Linux, I'd like to be able to use the same Thunderbird profile I use under Windows, so I pointed Thunderbird to…
JCCyC
  • 2,703
192
votes
23 answers

How do I place a bootable ISO on a USB drive?

What's the best way of placing a bootable ISO on a USB drive, such that the drive is bootable? ISOs such as a live Linux preview disk, Windows installation ISO, etc.
Justin White
  • 2,109
192
votes
2 answers

How do I disable links in Notepad++?

Since a few months ago, Notepad++ automatically makes clickable links whenever I type a URL. This behaviour makes it much more difficult to edit HTML documents because instead of clicking in the middle of a text URL to change it, it now opens the…
superuser
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192
votes
23 answers

Why is 'ping' unable to resolve a name when 'nslookup' works fine?

On my Windows XP workstation, I can find the machine I want to connect to in DNS with nslookup: nslookup wolfman Server: dns.company.com Address: 192.168.1.38 Name: wolfman.company.com Address: 192.168.1.178 But, when I try to connect to that…
skiphoppy
  • 2,753
192
votes
4 answers

What are the differences between the rsync delete options?

I see on the rsync man page that there are a number of delete options, but don't really understand the differences between them. What are the differences between these options? --del an alias for --delete-during --delete …
Skilldrick
  • 2,207
191
votes
24 answers

What are some options for transferring large files without using the Internet?

My employer's Internet connection is extremely slow. It's $6,000 a month, 9 Mb, bonded T1, shared by over 150 users. It's not untypical to see regular file transfer speeds of 20-100 KBps. And that was after I convinced upper management to upgrade…
Kyle Lowry
  • 1,896
191
votes
6 answers

Why can't I find a USB-C hub with multiple USB-C ports?

My computer only has one USB-C port and I want to connect multiple USB-C devices to it. I have trawled through Amazon but am amazed that I cannot find a single one. There are many hubs that have USB 3.1 USB-A ports but not USB-C ones. Is there a…
NibblyPig
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190
votes
9 answers

How do I create a GIF screencast in Windows?

I need a way to record my Windows desktop and save it as an animated GIF file. Here's an example: I need GIF animations so that they can run from a web page without requiring any plugins. I want to record and save directly as a GIF. How can I…
metal gear solid
  • 8,914
190
votes
13 answers

How can I put the computer to sleep from Command Prompt/Run menu?

I know that almost everything on Windows, like opening any sort of application, can be done from the command prompt or from the Run menu. How can I put my computer to sleep or shut it down? What is the command for that?
Lazer
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