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1500 questions
117
votes
5 answers

Is it ok to share private key file between multiple computers/services?

So we all know how to use public key/private keys using SSH, etc. But what's the best way to use/reuse them? Should I keep them in a safe place forever? I mean, I needed a pair of keys for accessing GitHub. I created a pair from scratch and used…
Behrang Saeedzadeh
  • 2,042
117
votes
5 answers

How to move the recovery partition on Windows 10?

I upgraded to Windows 10 and a 450Mb Recovery partition was created on my disk. I would like to extend the system partition but the Recovery partition is in the way. How can I move the Recovery partition to the end of the disk volume without…
pharsfalvi
  • 1,271
117
votes
2 answers

What exactly does the Avast "remind me next century" option actually do?

When Avast needs to restart your computer after a program update, it provides an option to remind you "next century": Based on anecdotal responses to it that I've come across, it definitely doesn't wait an actual century, so just what exactly does…
Hashim Aziz
  • 12,732
117
votes
13 answers

How to speed up rsync between two local disks?

I'm running rsync to sync a directory onto my external USB HDD. It's about 150 gigs of data. 50000+ files I would guess. It's running it's first sync at the moment, but its copying files at a rate of only 1-5 MB/s. That seems incredibly slow for a…
Jake Wilson
  • 4,414
116
votes
4 answers

Windows 10 high memory usage (unknown reason)

A few days ago I updated my PC to Windows 10. However, after some use my PC started to slow down until it was impossible to use – it was due to high memory usage. After a restart, everything came back to normal (total usage around 25% of 8GB of…
Lukas
  • 1,263
116
votes
3 answers

Sort text by value in Notepad++

I have lists of files that contain a few columns of data. It is not sorted the way I want from the output, so I'm manually hunting for where a line should be. Is there a way in Notepad++ to sort the lines alphabetically? If so, how?
Canadian Luke
  • 24,339
116
votes
13 answers

How to create a video from images using FFmpeg?

Is it possible to use ffmpeg to create a video from a set of sequences, where the number does not start from zero? For example, I have some images [test_100.jpg, test_101.jpg, test_102.jpg, ..., test_200.jpg], and I want to convert them to a video.…
vailen
116
votes
5 answers

Windows 7 Taskbar Icon Highlight Sticks

After running Win 7 for some unknown period of time, the taskbar icon highlight starts to stick (video demo here: http://screencast.com/t/l5LhJ2uM). If I restart or kill explorer.exe and relaunch, it goes away. Any idea what might be causing this?
John Sheehan
  • 1,686
116
votes
1 answer

Remove single file from zip archive on Linux

I have a zip archive (created automatically in a script with -j -r flags) and I would like to remove a single file from it. I tried as documented. zip -d "picture_43_9.jpg" gallery.zip but I get this error: zip warning: picture_43_9.jpg not found…
Alex Flo
  • 1,351
116
votes
8 answers

Irritating auto-changing column types in Windows Explorer in case of audio/video files

I have an empty folder with regular details view. File name, file size, file type columns are shown and I am happy. Then I put some MP3 or WAV files in. Windows Explorer "kindly" changes the column types. It will show Genre, media length, Album and…
user1706184
  • 1,263
116
votes
6 answers

How can I use encryption with Gmail?

I'm currently reading Cory Doctorow's novel Little Brother which includes a part about encrypted messaging, and even wrapping messages first in my private key and then your public key. I'd like to play around with that but from what I've googled so…
Torben Gundtofte-Bruun
  • 18,336
116
votes
14 answers

Must TCP use IP?

Is it true that TCP is short for TCP/IP and they mean the same thing? Is it possible for TCP to be built on top of another protocol besides IP?
Pacerier
  • 27,223
116
votes
3 answers

How to echo contents of file in a DOS/Windows command prompt

Possible Duplicate: How can I print a textfile on the command prompt in Windows? Like in Unix' cat filename ... Can this be done?
t123
  • 1,825
116
votes
4 answers

how to expand aliases inline in bash?

Is there a way to expand aliases inline in bash? $bash>alias ll='ls -l ' $bash>ll $bash>ls -l
asdfg
  • 2,856
116
votes
2 answers

What is $* and $# in Linux?

What do the following environment variables in Linux mean? What is $* (dollar sign followed by an asterisk)? What is $# (dollar sign next to a hash mark/number sign/octothorpe/pound sign)?
raghavayc
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