I am about to press enter to run a command in terminal, but before doing that, I want to copy the command to clipboard without using the mouse.
How?
If you're somewhere other than the terminal, Ctrl+Home does it.
Is there a way of arbitrarily selecting text like that in the terminal?
EDITED:
screen is not a good alternative
I asked here how to make cd protect spaces. Tab completion is great, but sometimes you paste the path from the clipboard so this is useful.
The solution breaks with parentheses however. No matter how you try to escape and protect the input it always returns:
bash: syntax error near unexpected token `('
Is there some way to have it also deal with parentheses? What I want is that when I enter this, it works:
cd My path with spaces (and parentheses)
Most text editors - vim, emacs, kate, gedit - have colorizers, so that, depending on the language you're programming in, it will color the text differently.
Is there a way to do that for code sent to the STDOUT? So that commands like those will colorize the whole output according to the language of the file (from extension or magic):
cat my-script.py
or
head -n 15 my-script.lua
How to list all variables names and their current values?
Including not only $HOME, $PWD etc but any other you have defined.
When you create a new file in kate or gedit they name them like "Untitled1" or "Unsaved Document 1". How can you change this to some other string$n pattern of your choice?
Sometimes a link has unicode characters in it, such as http://www.example.com/файл.zip
If you point your browser to it, it will properly prompt you to download the file as файл.zip. But if you try to do it with wget, the file comes with a mix of ?, percent encoding (like %D0%BB) and the (invalid encoding) string after the filename.
What parameters can I add to wget, or any other command line tricks, so that it behaves as Chrome and Firefox and saves the file exactly as specified in the rendered link - in this case, as файл.zip?
The solution should work without having to explicitly write it in the command, so an explicit wget -O файл.zip http://www.example.com/файл.zip is not a good solution.
I realize that as soon as you run wget http://www.example.com/файл.zip it tries to retrieve http://www.example.com/%D1%84%D0%B0%D0%B9%D0%BB.zip, that is, it converts the link to percent encoding, which may be the reason why it saves it doesn't render the filename "properly".
I posted a somewhat related question here, whose answer may or may not be of help to this one.
Is there a simple way to retrieve someone's tweets from the command line?
The account would be public, and the command - or script, if necessary - would retrieve all or a specified number of most recent tweets to a text file, one tweet per line, without the metadata, the newest in the first line.
Without the use of API, only bash.
What is the command line equivalent to pressing CTRL+C over a file in the file manager so that the file (not the filename) is copied to the clipboard?
A situation where this can be useful and fast, for example, is when you want to copy to the clipboard a file from the directory you are in the terminal to quickly paste the file in the directory you are in the file manager. There are others.
This question hadn't been asked separately, so here it is.
In particular, is there any official repository that provides and https alternative to the defaults http official repositories?
Does apt-get use https or any kind of encryption? Is there a way to configure it to use it?
I can define a function like:
myfunction () { ls -R "$1" ; }
And then
myfunction .
just works.
But if I do
echo "myfunction ." | sh
echo "myfunction ." | bash
the messages are:
sh: myfunction: not found
bash: line 1: myfunction: command not found
Why? And how can I call a function that comes from a string if not by piping it to sh or bash?
I know there is this command source, but I am confused of when I should use source and when sh or bash. Also, I cannot pipe through source. To add to confusion, there is this command . that seems to have nothing to do with the "." that means "current directory".
What is the easiest way to send a file:
How to quickly set it up?
I've heard cases of people who had problems with ecryptfs-encrypted $HOME when upgrading their Ubuntu versions. Is there any truth in that, and if yes how to upgrade without problems?
I'm thinking if I should move from the ecryptfs $HOME encryption to a full-disk encryption. What is the most recommended tool I can use for this full-disk encryption, and what is the best tutorial available on how to migrate from ecryptfs? Free and open source a big plus.
I know those are technically two questions, but the 1st question is just an opening to the 2nd.
How to convert wav to ogg and to mp3 with VBR and excellent end quality?
If possible, using soundconverter or ffmpeg.
Incidentally, I tried to see whether soundconverter uses VBR and there is nothing about it in the GUI preferences, so it is not clear. Does it?
I can save space by reducing bitrates of songs to x*, the value beyond which humans don't discern any difference. If so, how to reduce the bitrates with CLI:
1. mp3 to mp3 conversion
2. during mp3 to ogg conversion
3. ogg to ogg conversion
Of course, if the original bitrate is inferior than this "x", I don't want to artificially increase, I dare say.
* Reference to other question: What is the maximum audio bitrate humans can distinguish?
How can I extract text from images?
I am not talking about scanned files, but garden variety images, such as when you take a high-def picture of a blackboard at class, and it is nicely handwritten; or when you photograph a page from a recipe book and want the recipe in text format.
Any free and open software for that?
I tried tesseract, and the results were awful.
Is there any advantage in converting all mp3 to ogg, besides ogg being an open format? Any disadvantages? Is all metadata kept during conversion?
Edited, because of @N.N. suggestion. Here are the links to the separate questions:
If I have a video, normally avi, but could be any, and I want to create another one in the same format but just a part, the position i seconds to f seconds into the video, what is the one-line command to do this?
My home directory is encrypted with ecryptfs. I booted and logged in straight into root. Root see my home directory before I log in, but it shouldn't, and it wasn't that transparent.
However, when I check /home, the /myusername/.ecryptfs folder is there normally, and so is the .Private. So, it seems that encryption is there.
Note:
No changed passwords between the dates, so that isn't it.
It can be a coincidence, but I noticed that this happened after I used a common trick to dismiss the keyring asking for wifi password on login (the one you change the default keyring and leave wifi password as clear text).
My question is: