A lot of the time I edit a file with nano, try to save and get a permission error because I forgot to run it as sudo. Is there some quick way I can become sudo without having to re-open and re-edit the file?
I can’t figure out how to properly bring up the wi-fi card on my laptop. When I turn it on and issue
Given a directory of font files (TTF and OTF) I’d like to inspect each font and determine what style (regular, italic, bold, bold-italic) it is. Is there a command line tool for unix flavored operating systems that can do this? Or does anyone know how to extract the metadata from a TTF or OTF font file?
In my bash command line, when I use unzip -l test.zip I get the output like this:
I am often logged in several SSH sessions at once. To logout from several sessions, I press CTRL+d, until I am back on my local machine. However, I occasionally press it once too many, and my terminal exits. Is there a way to make CTRL+d unable to close my terminal ? I am using terminator … Read more
I need to read the following input into separate columns as variables?
input.txt
I have been wondering what would be the best way to get good randomness in bash, i.e., what would be a procedure to get a random positive integer between MIN and MAX such that
I know how to create an empty file:
I have a text file in an unknown or mixed encoding. I want to see the lines that contain a byte sequence that is not valid UTF-8 (by piping the text file into some program). Equivalently, I want to filter out the lines that are valid UTF-8. In other words, I’m looking for grep [notutf8].
I need to run a command, and then run the same command again with just one string changed.