I use:
> coffee -c myscript.coffee
And in output I have myscript.js. I want to have myscript.coffee.js. Is there possibility to do it with help of coffee cli only?
My understanding is that you can't do it solely through the CoffeeScript CLI. However, with a little Unix magic:
coffee -p -c myscript.coffee > myscript.coffee.js
Related
I want to be able to run simple one line commands on my terminal, but instead of them being complicated I want them to be very simple, writing my own commands for these complex command lines that I have to write out so frequently. I am using the zsh command line and for example I would want to do this.
% npx tailwindcss -i ./static/styles.css -o ./static/output.css --watch
into something much easier to read such as
% build tailwindcss
Another problem/example is where if I would like to use http-server, but I want to turn off the caching, I don't think you can change the default settings for http-server module to turn off the caching, I have to do this:
% http-server -c-1
I know it is not too much of a big deal but I would like to at least pretend that the zero caching is the default. So I could do something like this with the command line:
% run server
And that would just run the server.
Also as a side note if this is not the best command line tool to do stuff like this in like maybe bash would be better I would be open to using a different command line tool as well.
Using aliases
If you run the exact same command every time you could alias it like this:
alias http-server="http-server -c-1"
alias <alias-name>="npx tailwindcss -i ./static/styles.css -o ./static/output.css --watch"
Now http-server expands to http-server -c-1 and <alias-name> expands to npx tailwindcss -i ./static/styles.css -o ./static/output.css --watch
Using functions
If you want to choose the input file each time you could write a function instead:
build(){
npx tailwindcss -i $1 -o ./static/output.css --watch
}
Then you can build with build file.css
Add the alias or function to ~/.zshrc if you want it available every time you start zsh
Using bck-i-search
Use Ctrl+r to search history. Pressing Ctrl+r and writing "tailwind" will likely show you the full command. You can even comment the function with some arbitrary words to make them easier to find in history (e.g. "aaa")
npx tailwindcss -i ./static/styles.css -o ./static/output.css --watch #aaa
I am reviewing the source code for gitflow-avh (A VirtualHome edition), version 1.12.3, which ships with Git for Windows, version 2.31.1. I'm looking at lines 67-73 of the script git-flow.
*MINGW*)
export GITFLOW_DIR=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
pwd () {
builtin pwd -W
}
;;
*)
# The sed expression here replaces all backslashes by forward slashes.
# This helps our Windows users, while not bothering our Unix users.)
export GITFLOW_DIR=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
;;
esac
What is the -W option? I'm only aware of -L and -P in bash. I'm fairly confident this is a "MINGW-ism", but I'm having trouble finding documentation online.
Does anyone know what the -W option does?
Ok, so I found this specifically has to do with MSYS2, as opposed to MINGW.
Per MSYS2's website, "How does MSYS2 differ from Cygwin?":
I had to run MSYS2 itself to actually see what the -W option provided:
In my "root" directory in Git Bash on Windows, pwd just gives me /.
But with -W, I get the real location:
$ pwd -W
C:/Program Files/Git
There's nothing on the man page for pwd, of course. Based on #A. Hendry's answer, I think I'll just alias pwd so that it always uses the -W option.
So in the terminal, I can run my program with
./letter --stack -b ship -e shot -c --output W < input.txt > output.txt
How do I achieve the same functionality in Eclipse? I've figured out how to do --stack -b ship -e shot -c --output W by going to the arguments tab under Run configuration.
I've looked online and seen a lot of posts about using the Common tab to input and output redirection but I can't get it working. When I check only the input file, it doesn't work and the Debug perspective shows it's stuck somewhere trying to read from a stream. When I check allocate console and input file, then it gets stuck on user input (aka I can manually type stuff) in the console.
So how do I get < input.txt and by extension > output.txt working?
I'm looking to use wget to retrieve a perl file and execute it in one line. Does anyone know if this is possible/how I would go about doing this?
In order to use wget for this purpose, you would use the -O flag and give it the '-' character as an argument. From the manpage:
-O file
--output-document=file
Giving '-' as the "file" option to -O tells it to send it's output to stdout, which can then be piped into the Perl command.
You can provide the -q flag as well to turn off wget's own warning and message output:
-q
--quiet
Turn off Wget's output.
This will make things look cleaner in the shell.
So you would end up with something like:
wget -qO - http://127.0.0.1/myscript.pl | perl -
For more information on I/O redirection take a look at this:
http://www.tldp.org/LDP/abs/html/io-redirection.html
Just download and pipe to perl
curl -L http://your_location.pl | perl -
You'll sometimes see code like for install modules like cpanm.
Can sh itself check if a program exists or is in path?
I.e., not with the help of the "which" program.
I don't believe sh can directly. But perhaps something like:
which() {
save_IFS=$IFS
IFS=:
for d in $PATH; do
test -x $d/$1 && echo $d/$1
done
IFS=$save_IFS
}
and here's a nice variation that uses a subshell so that restoring IFS is not necessary:
which() (
IFS=:
for d in $PATH; do
test -x $d/$1 && echo $d/$1
done
)
Also, (in bash) if the command has been executed in the past and bash has already done the PATH search, you can see what it found with hash -t.
bash-3.2$ hash -t which
bash: hash: which: not found
bash-3.2$ which foo
bash-3.2$ hash -t which
/usr/bin/which
The utility command -v $CMD is apparently a portable option (in the sense of being part of POSIX); see also the very similar (though bash-specific) question, in particular this answer.