nano

I'm very new to programming and playing around with a Raspberry Pi and following tutorials on Youtube. I have opened a file in GNU Nano 2.2.6 e.g: nano my_File.py and changed some of the data. I'm struggling on how to overwrite the file (or save it) because when i run it in a new window it uses the original data... Thanks. If you press Ctrl-X , for exit, it will ask you whether you want to save the file. Ctrl-O is for saving file without exiting the editor. Ctrl-G is for help on key combinations. 来源： https://stackoverflow.com/questions/14057924/python-saving-a-file-being-edited-in-gnu-nano-2-2

I want to combine multiple text files into one text file. Is there any command in ubuntu terminal to do this, or do I have to do it manually? Try cat like cat file1 file2 file3 > outputFile cat stands for concatenation. > is for output redirection . If outputFile already has something in it and you wish to append to it the contents of other files, use cat file1 file2 file3 >> outputFile as > would erase the old contents of outputFile if it already existed. Have a look here as well. 来源： https://stackoverflow.com/questions/47240577/ubuntu-how-to-combine-multiple-text-files-into-one-with-terminal

I have a python script that needs to call the defined $EDITOR or $VISUAL . When the Python script is called alone, I am able to launch the $EDITOR without a hitch, but the moment I pipe something to the Python script, the $EDITOR is unable to launch. Right now, I am using nano which shows Received SIGHUP or SIGTERM every time. It appears to be the same issue described here . sinister:Programming [1313]$ echo "import os;os.system('nano')" > "sample.py" sinister:Programming [1314]$ python sample.py # nano is successfully launched here. sinister:Programming [1315]$ echo "It dies here." | python

After the installation of OSX Lion, I tried to: nano /etc/apt/sources.list But I get this error: Error opening terminal: xterm-256color If I try to switch terminal.app preferences to open terminal windows in "xterm color" instead of xterm-256color everything works fine. What's happening? On Red Hat this worked for me: export TERM=xterm further info here: http://www.cloudfarm.it/fix-error-opening-terminal-xterm-256color-unknown-terminal-type/ After upgrading to OSX Lion, I started getting this error on certain (Debian/Ubuntu) servers. The fix is simply to install the “ncurses-term” package

I am aware of nano 's search and replace functionality, but is it capable of using regular expressions for matching and substitution (particularly substitutions that use a part of the match)? If so, can you provide some examples of the syntax used (both for matching and replacing)? I cut my teeth on Perl-style regular expressions, but I've found that text editors will sometimes come up with their own syntax. You need to add, or un-comment, the following entry in your global nanorc file (on my machine, it was /etc/nanorc ): set regexp Then fire up a new terminal and press CTRL + / and do your