set -q var (note the missing “$” – this uses the variable name) can be used to check if a variable has been set. set -q var[1] can be used to check whether the first element of a variable has been assigned (i.e. whether it is non-empty as a list). test -n “$var” [fn0] (or … Read more
To ignore a git directory specifically, I’d try git export first. But in general, to copy a directory tree excluding certain files or folders, I’d recommend using rsync instead of cp. The syntax is mostly the same, but rsync has way more options, including one to exclude selected files: rsync -rv –exclude=.git demo demo_bkp See … Read more
I’ll throw in another example for folks using ag, The Silver Searcher to do find/replace operations on multiple files. Complete example: ag -l “search string” | xargs sed -i ” -e ‘s/from/to/g’ If we break this down, what we get is: # returns a list of files containing matching string ag -l “search string” Next, … Read more
Here are the steps I used to setup the fish shell on my M1 MacBook Air. Per the comments on the question, the key to solving the Unknown Command issue is the fish_add_path: $ brew install fish $ fish $ fish_add_path /opt/homebrew/bin $ echo “/opt/homebrew/bin/fish” | sudo tee -a /etc/shells $ chsh -s /opt/homebrew/bin/fish
You should be able to use || or -o I think as follows: if [ $uptime -lt 0 ] || [ $questions -lt 1 ] || [ $slow -gt 10 ]; then some code fi
Brief (You’ll use a linux terminal/console) Use head -n NUMBEROFLINES file.csv to get the first NUMBEROFLINES of lines. Write it into another file using shell redirection (>) like this: head -n NUMBEROFLINES file.csv > mynewfile.csv Note that this will totally recreate mynewfile.csv, if it had any content before it is now deleted forever(-ish). If you … Read more
If you want to have quotes, then you must escape them using the backslash character. echo “I am \”Finding\” difficult to write this to file” > file.txt echo echo “I can \”write\” without double quotes” >> file.txt The same holds true if you i.e. also want to write the \ itself, as it may cause … Read more
There’s already a function for applying color to comint buffers. You simply need to enable it on compilation buffers: (require ‘ansi-color) (defun colorize-compilation-buffer () (toggle-read-only) (ansi-color-apply-on-region compilation-filter-start (point)) (toggle-read-only)) (add-hook ‘compilation-filter-hook ‘colorize-compilation-buffer) Color writing programs should check the TERM environment variable and the terminfo database to check if the terminal supports color. In practice, a … Read more
The problem is that Ctrl-C sends a signal to the top-level process inside the container, but that process doesn’t necessarily react as you would expect. The top-level process has ID 1 inside the container, which means that it doesn’t get the default signal handlers that processes usually have. If the top-level process is a shell, … Read more
It is the feature according to this; when we are sshing, the hostname will be shown. Overriding the function prompt_context or build_prompt on Agnoster theme will rescue. Putting below snippets at the very end of the ~/.zshrc for example. # redefine prompt_context for hiding user@hostname prompt_context () { }