All Issues
24,993 verified issues
How can I merge two mp4 files without losing quality?
I have two high-quality mp4 files, which are of two parts of the same show. I want to merge them together into 1 file, and I usually use VirtualDub to merge my files... But it doesn't seem to support mp4. What alternatives are available (especially ones that don't require re-encoding)?
Boot Camp: is it possible to restart directly to Windows from Mac OS X?
With the Boot Camp tools installed on Windows, there's an option for rebooting directly to Mac OS ("Restart in Mac OS X" from Boot Camp system tray item). But is this possible in the opposite direction? In other words, instead of the procedure 1) "Restart", 2) wait for OS X to shut down, 3) hold Option key (⌥), and 4) select the Windows partition, can I tell my Mac to restart so that Windows is selected on the next boot? Something like "Restart in Windows" which would let me bypass steps 2-4. NB: I want to keep Mac OS X as the default OS; I'm just looking for a convenient shortcut when normally running OS X and occasionally wanting to boot to Windows.
What is the best way to fix a stuck pixel on an LCD screen?
I have an LCD screen with a pixel that is stuck ON (that is, bright). What do you suggest to fix it (it's not a dead pixel)?
How do I prevent pages I visit from overriding selected Firefox shortcut keys?
In Firefox, how can I prevent pages from overriding Firefox built-in keyboard shortcuts through Javascript on a per-key basis? Preferably on a per-site basis, too? The most frustrating override is the forward slash ('/') that's linked to "Find in page". Sites like Google search results, Twitter timelines, some wikis, and other pages steal the slash key for their own search boxes, which is completely wrong. Since my rep lets me ask, edit, and answer questions, but not add comments, this is basically a duplicate of these other two questions that weren't properly answered: How do a stop a website for overriding my keyboard short cuts Firefox: don't allow websites to override the / (slash) key
How can I adjust start and end time for reoccuring meetings in Outlook?
I have a situation where I have a few reoccurring meetings in my Outlook calendar for which I want to change the start and end time for. I didn't create the meeting in the first place, and I don't want to change the time for other users that are invited to the meeting. I only want to move the start/end time on my calendar. I can do this easily if I open only a single occurrence of the meeting. However, if I open the series, I cannot. I have Outlook 2010. How can I accomplish this?
How can spell checking be turned off for a portion of a OneNote page
How can spell checking be turned off for a portion of a OneNote page? The set language form does not have a checkbox (like the one for Word 2010 has). There are over 100 languages to choose from, but all of then will perform some sort of proofing.
What are the various link types in Windows? How do I create them?
Is it possible to link two files or folders without having a different extension under Windows? I'm looking for functionality equivalent to the soft and hard links in Unix.
How to search terminal output
Suppose I have a Terminal open that contains thousands of lines of output from my previous commands over the past few hours/days. How do I search that recorded output for a string? I'm especially interested in a solution that doesn't require the mouse. I know I should have used tee, but that's not always convenient. I know I could "Select All", then open an editor, paste, then search, but I'm hoping for something simpler (and Select All seems to require the mouse). I was hoping there would be a "Find..." command in the menu bar (like Mac OS X has).
Resume rsync over SSH after broken connection?
I have to transfer large amounts of data (>80 GB) over ssh using rsync. Everything is working fine, but the DSL connection where the backup data is sent from will drop once every 24h for up to 3 minutes (switching providers is not an option). How do I: Automatically restart the transfer when the connection is back up? Make sure there are not by accident two rsync commands running at the same time?
Disable ability to pull a tab off of Chrome
I'm so sick of mistakenly pulling my Chrome tabs out of the tab list when i click on it, and having it open in a new window. I'm always pulling them off, then having to drop them back. Does anyone know of a way to disable this 'feature' of Chrome?
Vim: how to paste a block of text at the end of multiple lines?
Say I have a block of text like this: And I want to append each of these lines to the end of 3 corresponding lines of code: So that the end result is Is there an easy way to do this in Vim?
How can I play a sound from the command line in macOS?
I would like to play a short sound file from the command line in Mac OS X, independent of any audio player application, in order to provide notification that a long job has finished.
How do I properly set wget to download only new files?
Let's say there's an url, let's call it This location has directory listing enabled, therefore I can do this: To download all its contents with all the files and subfolders and their files. Now, what should I do if I want to repeat this process again, a month later, and I don't want to download everything again, only add new/changed files?
How to force the Outlook rule to be server-side?
Using Outlook 2010 with a corporate Exchange Server. The rule I want to create is this: After rule arrives from and with in the subject Move it to the folder and mark it . When I did that, the Outlook marked the rule as Client-Side. So I removed the part about marking it Read and it became a server side rule. So I thought, ok, maybe marking an email as read is a client-side only activity. So I sent myself an email, closed Outlook, opened the email on my iPhone (thus marking it read). Then I opened the Outlook again and the email was already marked read. So clearly marking emails read can be a server-side activity. So why is my rule being shoved client-side?
Getting date and time of system startup in Linux
I know that prints the time a machine has been up and running, but is there an easier (reliable) way to get the date of the start up than counting down from this output? I tried looking around , but didn't find anything of relevance. There's also a line like this on my : But I'm wondering if this method is distribution and kernel version agnostic?
Convert an MP3 from 48000 to 44100 Hz?
I have some MP3s that are in 48000 Hz sampling frequency. I'd like to burn them to CD, so I have to reduce the sampling frequency into 441000. How to do that using ffmpeg?
How to cd to a directory that contains a space in its name?
I have a directory called "Reader 0.5" in my Desktop on Mac Os X. When to access the directory in terminal, I am using below code: but it throws: No such file or directory error. How can I cd into that directory? Thanks.
What does the command "sudo !!" mean?
I saw the command in a video. What does this mean?
Reload file in vim
When I have a file open in vim, in this case a log file, I'd like to trigger a refresh and load any file changes into my existing vim session. I often use tail -f on log files, but as I'm using java and tomcat, the log messages are too much for tail... Is there a vim command to reload an open file?
Find libraries a binary was linked against
I know that there is a command that lists me the libs and respective versions a software was linked against. Something with ld or libtool? But I just cannot remember. Spent some time on google but didn't come up with anything useful. Update would help on linux, (from @Ernelli) while I found that does something similar on MacOS X.