commandlinefu.com is the place to record those command-line gems that you return to again and again.
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Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:
Lists all macros and their values defined by gcc.
outputs a f=220Hz guitar string sound (fifth string A)
Install Ksuperkey one command in Kubuntu.
You must manually add ksuperkey to autostart in System Settings KDE.
Something I pulled off 4chan, it plays a tune.
This is a quick hack to make a gcc caller. Since it runs with gcc instead of tcc, it's a bit more trustworthy as far as the final answers of things go.
doesn't need /dev/null
It's hard to beat C. This is just slightly faster than the bc version on my machine.
Requirements: libgmp headers, gcc.
Compile *.c files with "gcc -Wall" in actual directory, using as output file the file name without extension.
is the runtime linker/loader for ELF binaries on Linux.
=(cmd) is a zsh trick to take the output for the command "inside" it and save it to a temporary file.
echo -e 'blah' | gcc -x c -o /dev/stdout -
pipes the C source to gcc. -x c tells gcc that it's compiling C (which is required if it's reading from a pipe). -o /dev/stdout - tells it to write the binary to standard output and read the source from standard input.
because of the the =() thing, the compiled output is stashed in a tempfile, which the loader then runs and executes, and the shell tosses the tempfile away immediately after running it.