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1500 questions
379
votes
11 answers
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:root. What went wrong?
rizidoro
379
votes
16 answers
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?
Ryan C. Thompson
- 12,227
374
votes
11 answers
How to read ext4 partitions on Windows?
Is there a way to read ext4 partitions from Windows? If so, what can I do?
zillion
- 468
374
votes
17 answers
"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.
George2
- 5,169
373
votes
11 answers
How can I extract RAR files in macOS?
How can I extract RAR files in macOS? The built-in archive utility only supports ZIP.
Is there anything else, built-in or third-party, that also supports RAR?
I don't mind whether it's Terminal-only or GUI.
Paul D. Waite
- 7,086
372
votes
12 answers
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 passwords; also family photos and the plethora of other…
Torben Gundtofte-Bruun
- 18,646
369
votes
14 answers
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.
Is there a command line tool I can use for such…
JWL
- 3,891
368
votes
19 answers
How to reliably keep an SSH tunnel open?
I use an SSH tunnel from work to go around various idiotic 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 least monitor the tunnel automatically, I could…
Peltier
- 6,504
367
votes
5 answers
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?
Sagnik Sarkar
- 3,771
366
votes
11 answers
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?
AndreaNobili
- 7,381
366
votes
13 answers
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 Firefox, I know it to be Shift+Refresh.
In Chrome,…
gAMBOOKa
- 361
360
votes
12 answers
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 a file from a given URL with HTTP GET. For…
jsalonen
- 9,241
358
votes
5 answers
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 I don't know is: Who provides the Internet to the…
James Mertz
- 26,529
357
votes
8 answers
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
SELECT Distinct(MyColumn) FROM MyTable
Kjensen
- 6,814
352
votes
14 answers
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. I'm remoting in to a Windows XP machine, and…
rtf
- 12,826