All Issues
24,993 verified issues
How to make Vim spellcheck remember a new word
I'm using gVim for LaTeX editing. I write lots of scientific documents with words that the vim dictionary does not know. When running through spell checking I come across words that I know are spelled correctly, how do I add those words to the dictionary?
Using ffmpeg to cut up video
I am using to cut out a section of a large file like this: The part works fine but the is ignored. It correctly removes the initial specified seconds specified with but then keeps going to the end of the input with the copy. Is there a way to use to cut off the end of a video without recoding it?
Disable auto-update in Notepad++
Is it possible to configure Notepad++ to stop checking for new versions each time it is run? Every time Nodepad++ is started a dialog pops with: An update package is available, do you want to download it?
How to open folder without using mouse in Mac?
I'm recently switched to Mac from Windows. It was quite a pain but I am now adjusted to the Mac commands and shortcuts, except one. That is whenever I select a folder and press Return/Enter it executes the rename. While I was expecting it to open it? Is there any way I can change the shortcut?
What's the difference between SCP and SFTP?
Usually, I use the command to transfer files on *nixes. What's the difference between SFTP and SCP? Don't they both work on SSH?
How to: Unlimited Bash/shell history?
Is there a way to define an unlimited history in Bash ?
Run VirtualBox in background, without a window?
I was wondering if it's possible to run an Ubuntu virtual machine using VirtualBox in background, I mean, without any window open. The idea is to connect via SSH to the Linux host, that would be running in background. Has anyone ever done something like this? Is it possible?
How do you reload your .vimrc file without restarting vim?
Can you edit your file and reload it without having to restart Vim?
How can I tell how many bits my ssh key is?
I already created an ssh key for myself sometime in the past. I don't remember "how many bits" it is. How can I tell? I'm wondering because I'm using hosting at nearlyfreespeech.net and their faq says: Can I configure my ssh connection to use a public key? ... we will not install keys that have a length less than 1536 bits ... We prefer that you use a key at least 2048 bits in length, and if you are generating a new key, the recommended length is 4096 bits.
In bash, how do I escape an exclamation mark?
I want to do something like . I can sort of escape the exclamation mark by doing . However, then my commit message includes the backslash. How do I escape the exclamation mark, while still ignoring the backslash?
How to extract one frame of a video every N seconds to an image?
How can I convert a video file to a sequence of images, for example one frame every N seconds. Can mplayer or ffmpeg do this? I have used MPlayer to grab screenshots manually but I would like to automate this for a long video.
How to copy symbolic links?
I have directory that contains some symbolic links: I need to copy them to the current directory. The resulting links should be independent from their prototypes and lead directly to their target objects. creates links to links that is not appropriate behavior. refuses to copy links to directories refuses to copy relative links to non-working directory What should I do?
How can I avoid SSH's host verification for known hosts?
I get the following prompt everytime I try to connect a server using SSH. I type "yes", but is there a way to aovid this?
How to stop jucheck from running? Java won't remember "Check for Updates Automatically" setting
I've installed Java on Windows Vista, and every day I get a Vista security warning asking me if I want to run "jucheck". Apparently this is the Java automatic updater. Well, I don't want it to run on its own, ever. I cancel it, and quit it. I right-click on the taskbar and unclick "Check for Updates Automatically", and then click "Never Check", and "Apply". And yet, it never remembers this setting. If I come back to the "Java Control Panel" right after clicking "OK", the very same box is checked again, all on its own. Is there some way to kill jucheck once and for all? If I simply delete jucheck.exe, will Java (other than the automatic check) still work, and will manual updates still work, and will it stop even trying to update every morning?
Ignore .svn when doing `diff -r`
has an option ( ) to do a comparison between two directories (the files inside them). Is there a way to make ignore certain sub-directories (eg: .svn)?
How can I scan the local network for connected devices in Mac OS?
I'm basically looking for something like this but available on Mac. I am using Mac OS X 10.6. I am trying to connect a new workstation to our wireless multifunction printer and I'm having a hell of a time getting the device to spit out an IP for me to connect to. Is there a way I can scan the network somehow?
How to measure disk-performance under Windows?
I'm trying to find out why my application is very slow on a certain machine (runs fine everywhere else). I think i have traced the performance-problems to hard-disk reads and writes and i think it's simply the very slow disk. What tool could i use to measure hd read and write performance under Windows 2003 in a non-destructive way (the partitions on the drives have to remain intact)?
How do I compare binary files in Linux?
I need to compare two binary files and get the output in the form <fileoffset-hex> <file1-byte-hex> <file2-byte-hex> for every different byte. So if is in binary form and is I want to get something like Is there a way to do this in Linux? I know about but it uses a decimal system for offsets and octal for bytes which I would like to avoid.
Manually closing a port from commandline
I want to close an open port which is in listening mode between my client and server application. Is there any manual command line option in Linux to close a port? NOTE: I came to know that "only the application which owns the connected socket should close it, which will happen when the application terminates." I don't understand why it is only possible by the application which opens it ... But I'm still eager to know if there is any other way to do it.
What is the difference between yum, apt-get, rpm, ./configure && make install?
I am new to Linux and am running CentOS. I have come across four ways to update or install software. So far, I've seen: -> -> -> -> That last one is a real pain, especially coming from Windows, where a program install is usually one click and a nice install wizard. So, my questions are: Why are there so many different ways to do this in Linux? Which one do you recommend using, and why? Are there any other ways to install programs in Linux?