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1500 questions
131
votes
9 answers

Is there a way to listen to the input sound on Mac OS X?

Is there any easy way to listen to the input on a Mac? For example, assume I have a microphone hooked up to the input (i.e. line in) of my Mac, and I have headphones hooked up to the output of my Mac: is there any way that I can hear what I say in…
Senseful
  • 4,240
131
votes
8 answers

How to set an alias in Windows Command Line?

I used to work on bash and benefit a lot from alias. Is there any equivalent way in Windows Command Line? I don't want to simulate a Linux environment, so cygwin is not a choice. I just need some shortcut for some very long command, like cd…
StarPinkER
  • 1,433
131
votes
9 answers

How can I repair the Windows 8 EFI Bootloader?

I installed Windows 7 and Windows 8 in EFI mode on a hard disk some days ago. Today, the bootloader got missing/corrupted. I currently have the Windows 8 installer on a flash drive and tried using the Automatic Repair option to repair the bootloader…
Elmo
  • 14,653
131
votes
13 answers

Recursively delete empty directories in Windows

I have a directory on my Windows 7 machine that has hundreds if not thousands of sub-directories. Some of them have files, some do not. I want to delete all the empty directories. Looking at the del and rmdir DOS command, it does not look like you…
mohlsen
  • 1,482
131
votes
6 answers

How to telnet to an IP address on a specific port?

Can anyone tell me how to telnet to an address using a specific port? I've tried the following: telnet 10.1.1.55 I suppose a route just hasn't been set up between the two hosts? What I am trying to do is this. We have a medical device – a…
Booksman
131
votes
6 answers

How do I change my default shell on a AWS instance?

I want to change my shell from the default bash shell to zsh on my Amazon EC2 instances. How do I go about doing it? Thanks!
Shripad Krishna
  • 1,411
131
votes
10 answers

How to open a .tar.gz file in Windows?

I need to open a file that sadly is only available in the .tar.gz file format and I am using Windows 7. I can unzip the file using 7-zip but after that I still have a .tar file that I can't open in Windows. Is there a way to open .tar.gz files on…
Jonas
  • 27,554
130
votes
9 answers

How do I add a user to multiple groups in Ubuntu?

What's the command line utility and the arguments it requires?
quackingduck
  • 3,171
130
votes
3 answers

How to use password argument in via command line to openssl for decryption

So it's not the most secure practice to pass a password in through a command line argument. That said, the documentation for openssl confused me on how to pass a password argument to the openssl command. Here's what I'm trying to do openssl…
David Sulpy
  • 3,819
130
votes
8 answers

Keyboard shortcuts to arrange Chrome tabs on Windows?

Scenario: I hit Ctrl+T to open a new tab, but I don't want it as the right-most tab, I want to slide it a few tabs to the left. Can I do this using just the keyboard or do I have to use the mouse? I can't see a shortcut here: Windows keyboard…
slugmandrew
  • 2,498
130
votes
8 answers

How do I stop the Windows 8 restart clock; '15 minutes' and counting...?

The question is pretty much in the title. Windows 8 is restarting, I probably only have like 13 minutes by now, but I can't have my computer shut off, doing like 20 different things on a couple of different VM's. How can I stop this? I found these…
EGHDK
  • 2,397
130
votes
14 answers

How to force GPG to use console-mode pinentry to prompt for passwords?

Using gpg from a console-based environment such as ssh sessions fails because the GTK pinentry dialog cannot be shown in a SSH session. I tried unset DISPLAY but it did not help. The GPG command line options do not include a switch for forcing the…
ccpizza
  • 7,763
130
votes
8 answers

Is it better to use a crowded 2.4GHz Wi-Fi channel 1, 6, 11 or "unused" 3, 4, 8, or 9?

I understand that 2.4GHz Wi-Fi channels overlap, and that the most popular non-overlapping set of channels in the US is 1, 6, and 11. Generally, my signal strength on channels 1, 6, and 11 are much stronger than my neighbors' on the same channel. …
Luke
  • 1,613
130
votes
18 answers

Substitution in text file **without** regular expressions

I need to substitute some text inside a text file with a replacement. Usually I would do something like sed -i 's/text/replacement/g' path/to/the/file The problem is that both text and replacement are complex strings containing dashes, slashes,…
Andrea
  • 1,505
130
votes
2 answers

How to add a mp3 handler to sox?

I want to play music in the terminal with sox. # install sox/lame sudo apt-get install sox sudo apt-get install lame # play music play music.mp3 # play FAIL formats: no handler for file extension `mp3' # mp3 -> wav lame --decode music.mp3…
kev
  • 12,730
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