All Questions
504,867
questions
395
votes
9
answers
607k
views
How can I view two files side by side in Notepad++?
I would like to split the Notepad++ window so that I can edit two files side by side.
How can I do this in Notepad++?
390
votes
13
answers
279k
views
How can I search the bash history and rerun a command?
Can I search history in bash and run the result?
390
votes
11
answers
620k
views
What disk image should I use with VirtualBox, VDI, VMDK, VHD or HDD?
Latest versions of VirtualBox supports several formats for virtual disks, but they forgot to provide a comparison between them.
VDI
VMDK
VHD
HDD
Now, I am interested about a recommendation or ...
389
votes
1
answer
24k
views
Ping faster than light
I just discovered very strange thing while testing my internet connection.
My ping is smaller than it should be. For example ping time to Arizona State University is about 14ms.
eryk@eryk-pc:~$ ping ...
388
votes
23
answers
730k
views
How do I list the SSL/TLS cipher suites a particular website offers?
How can I retrieve a list of the SSL/TLS cipher suites a particular website offers?
I've tried openssl, but if you examine the output:
$ echo -n | openssl s_client -connect www.google.com:443
...
388
votes
4
answers
657k
views
Go back to previous directory in shell
Is there a way to go back to previous directory we were in using bash,tcsh without using pushd/popd ?
I'd like to type something like "back" and got returned to the previous directory I was in.
Edit:
...
386
votes
13
answers
280k
views
Scroll shell output with mouse in tmux
Mouse scrolling doesn't work in tmux the way it works when I run shell without tmux (in Gnome Terminal). It seems tmux sends mouse scroll events as if I pressed Up/Down keys. But I want it to scroll ...
384
votes
4
answers
55k
views
Why does pinging 192.168.072 (only 2 dots) return a response from 192.168.0.58?
I mistakenly missed the dot off of an IP address and typed in 192.168.072.
To my surprise I connected to a machine at 192.168.0.58
If I ping 192.168.072 I get responses from 192.168.0.58.
Why is ...
384
votes
7
answers
145k
views
less command with multiple files: How to navigate to next/previous
I just found out I can use less with multiple files. less status line tells me
(END) - Next: file2.txt
But how do I navigate previous/next from less?
383
votes
19
answers
237k
views
If 32-bit machines can only handle numbers up to 2^32, why can I write 1000000000000 (trillion) without my machine crashing?
32-bit computers can only store signed integers up to 231 - 1.
This is why we have run out of IPv4 addresses and have entered the 64-bit era.
However, the number 231 - 1 (2,147,483,647) is not as ...
381
votes
10
answers
457k
views
How to compact VirtualBox's VDI file size?
I've a VirtualBox VM which configured a very large hard disk size (bigger than host). By my mistake, a program on the VM generated lots of log files and the VDI file size keeps growing until there is ...
381
votes
5
answers
496k
views
Bash: Iterating over lines in a variable
How does one properly iterate over lines in bash either in a variable, or from the output of a command? Simply setting the IFS variable to a new line works for the output of a command but not when ...
380
votes
8
answers
883k
views
How to recursively delete directory from command line in windows?
What is the windows equivalent of rm -r [directory-name]?
379
votes
4
answers
176k
views
How does one swap two panes in Tmux?
I have two panes in horizontal split. I'd like to have the pane currently on the right to be on the left in the window. I'm not talking about moving the focus (Ctrl+B o). How do I achieve this?
'left ...
374
votes
22
answers
598k
views
Move an off-screen window back on-screen on Mac OS X
It seems that Mac OS X 10.6.1 Snow Leopard has a tendency to leave some windows off-screen at times, especially when I disconnect an external monitor from my MacBook. How can I move the window back on-...
373
votes
8
answers
278k
views
tmux vs. screen
I'm about to get back into using GNU Screen, but I have been hearing people occasionally mention tmux as a better alternative. Does it really offer an alternative to all the features Screen offers, ...
371
votes
14
answers
571k
views
How do I find the location of an executable in Windows?
I remembered that I used a tool called as where to find locations for any executable programs like this in a console:
C:\Tmp\Where myTool.exe
C:\Program Files\MyApp\myTools.exe
....
Now I cannot ...
371
votes
12
answers
24k
views
How can I give my wife emergency access to logins, passwords, etc.?
I'm the digital guru in my household. My wife is good with email and forum websites, but she trusts me with all our important digital stuff — online banking and other things that require ...
368
votes
9
answers
393k
views
How to list files of a Debian package without install
This command can only list contents of installed packages,
dpkg -L PACKAGENAME
but how to list contents of a non-installed package, to preview/examine the package?
368
votes
10
answers
378k
views
chown is not changing symbolic link
I'm trying to change the user/group of a symbolic link with the command:
$ chown -h myuser:mygroup mysymbolic/
But it's not changing. I'm logged in as root. The current user/group is set to root:...
365
votes
15
answers
1.2m
views
How do you list all processes on the command line in Windows?
Is there a command equivalent to 'ps' on Unix that can list all processes on a Windows machine?
365
votes
13
answers
793k
views
How to reload the page by emptying cache in Google Chrome?
I don't know what exactly it's called, by cache refresh I mean, refresh the page after clearing its cache. I don't want to clear the entire browser cache.
I can't seem to cache refresh my pages. In ...
360
votes
17
answers
931k
views
"Show desktop" keyboard shortcut in Mac OS X
I am using a MacBook Pro with Mac OS X 10.5. Is there a similar function to "show desktop" (shortcut is WIN+D) on a Mac?
It should hide all applications and show a clean desktop.
359
votes
5
answers
92k
views
Who provides the Internet service to Internet Service Providers (ISPs)?
I've been wondering recently about how the infrastructure of the Internet really works.
I know that I have an Internet Service Provider (ISP) that supplies my connection to the Internet.
But what ...
358
votes
11
answers
895k
views
How to read ext4 partitions on Windows?
Is there a way to read ext4 partitions from Windows? If so, what can I do?
357
votes
1
answer
177k
views
Mouse pointer moving on arrow keys pressed in Windows?
I'm encountering a strange problem on my W10 computer, for a few days my arrow keys have been "driving" my mouse pointer. Pressing the left arrow key will move the pointer a few pixels left, ...
357
votes
14
answers
416k
views
How to get information about an image (picture) from the Linux command-line?
I'm working on a web app and currently migrating some stuff from an old app, but I hate that I have to open an image editor to get some info about images I'm migrating. Things like image dimensions.
...
355
votes
11
answers
762k
views
If I know the PID number of a process, how can I get its name?
If I have the PID number for a process (on a UNIX machine), how can I find out the name of its associated process?
What do I have to do?
350
votes
12
answers
611k
views
Native alternative to wget in Windows PowerShell?
I know I can download and install the aformentioned library (wget for Windows), but my question is this:
In Windows PowerShell, is there a native alternative to wget?
I need wget simply to retrieve ...
350
votes
16
answers
218k
views
How can I clear a single site from the cache in Firefox?
In Firefox, I occasionally need to clear my cache to fix a website. But clearing the entire cache seems like extreme overkill. Is there any way to just clear the one site from my cache?
348
votes
14
answers
817k
views
How can I send a Ctrl+Alt+Delete through Remote Desktop in Windows 8?
I need to send a CtrlAltDelete to a remote machine through Remote Desktop. The CtrlAltDelete is being intercepted by Windows 8, regardless of whether the remote desktop has focus or is in full screen. ...
348
votes
19
answers
313k
views
How to reliably keep an SSH tunnel open?
I use an SSH tunnel from work to go around various idotic firewalls (it's ok with my boss :)). The problem is, after a while the ssh connection usually hangs, and the tunnel is broken.
If I could at ...
348
votes
7
answers
1.4m
views
Why does virtualbox only have 32-bit option, no 64-bit option on Windows 7?
I have downloaded and installed the newest virtualbox 4.3.20 for my Windows 7 (64-bit OS), but when I want to install 64-bit Linux, the New->Create Virtual Machine only displays 32-bit option, no 64-...
347
votes
5
answers
182k
views
What's the difference between 127.0.0.1 and 0.0.0.0?
I understand that 127.0.0.1 points to localhost, and so does 0.0.0.0 (correct me if I'm wrong). So, what's the difference between 127.0.0.1 and 0.0.0.0?
345
votes
7
answers
1.1m
views
How do I get the distinct/unique values in a column in Excel?
If I have a column with values, and I want to find out what distinct values are in there (not how many - but the actual distinct values), how can I do that?
In SQL Server I would do something like
...
345
votes
9
answers
529k
views
Keyboard language keeps changing in Windows 10
So I recently did a clean install of Windows 10 English. I configured it to have English UI language but Norwegian keyboard. I have several problems with that setup:
The keyboard language keeps ...
344
votes
15
answers
925k
views
How do I view, add or edit Cookies in Google Chrome?
I wish to view, add and edit the cookies of my google chrome. Can anyone suggest to me a way to do it?
339
votes
11
answers
761k
views
How to force refresh without cache in Google Chrome? [duplicate]
Does Chrome have an equivalent to Firefox's Ctrl+F5 refresh? I can't seem to find one.
I changed my gravatar last night, and I can see the new one in Firefox after a Ctrl+F5 refresh, but Chrome seems ...
336
votes
3
answers
466k
views
Linux unzip command: Option to force overwrite?
I am writing a shell script that unzips a ZIP file into an existing hierarchy of files, potentially overwriting some of the files.
The problem is that the unzip command asks for confirmation:
replace ...
333
votes
9
answers
113k
views
How to append to a file as sudo?
I want to do:
echo "something" >> /etc/config_file
But, since only the root user has write permission to this file, I can't do that. But the following also doesn't work.
sudo echo "something" ...
332
votes
5
answers
260k
views
How can I search within the output buffer of a tmux shell?
I can't get this to work. How can I search the buffer of a tmux shell?
330
votes
12
answers
123k
views
Determine which tab in Firefox is using CPU resources?
Is there anything in the current Firefox similar to the Task Manager in Google Chrome? (Shift + Esc)
There is something that occasionally takes up enough CPU to make Firefox unresponsive - but with ...
326
votes
11
answers
323k
views
Menu select item stuck on screen after context or command menu has closed
Periodically when I select a menu command, the label or selected option gets "stuck" on screen and won't go away. I can close all open applications, including whichever one I was using when it got ...
325
votes
4
answers
133k
views
How to convert 2 horizontal panes to vertical panes in tmux?
After doing join-pane on 2 windows, you have 2 horizontal panes. How do I rearrange the panes to be vertical panes instead?
324
votes
7
answers
257k
views
How to pin either a Shortcut or a Batch file to the new Windows 7, 8 and 10 Taskbar and start menu?
We are having trouble adding our batch scripts to the Windows 7, 8 or 10 taskbar or start menu.
Our batchfiles take some arguments and just execute other application based on those arguments .
To ...
322
votes
6
answers
215k
views
How do you prevent the dock from switching monitors in macOS Monterey?
In Mavericks, Apple introduced a "feature" where if you hover at the bottom of any screen the dock pops up on that screen.
This is disrupting my workflow as I am constantly having the dock ...
321
votes
5
answers
212k
views
What does the "Fi" in "Wi-Fi" mean?
I just got into a heated discussion about Wi-Fi. What does the Fi in Wi-Fi mean? I would have thought potentially "frequency interface" since all network adapters are classified as interfaces. However ...
320
votes
6
answers
508k
views
How to match whitespace in sed?
How can I match whitespace in sed? In my data I want to match all of 3+ subsequent whitespace characters (tab space) and replace them by 2 spaces. How can this be done?
319
votes
8
answers
608k
views
How can I extract .rar files on the Mac? [closed]
Is there anything built-in that does this? (E.g. command line tools.) Or are there any third-party apps?
Update: I like The Unarchiver, but vote up your favourite, or add it as an answer if it isn’t ...
319
votes
3
answers
167k
views
Conclusively stop wake timers from waking Windows 10 desktop
How do you stop a Windows 10 Desktop waking up from the sleeping/hibernated power state without user intervention?
For lots of users this won't be an issue but, if you sleep in the same room as your ...