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Make cli commands yoinkable into cosmo shell

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This lets our system() and popen() commands function sort of like
BusyBox and ToyBox. By default the Cosmopolitan Shell is lightweight.
But if you use STATIC_YOINK then you can pull the individual commands
you want into the linkage, and they'll be included in a single binary.
For example the demo binary embeds `tr` and `sed` and ends up ~140kb.
This commit is contained in:
Justine Tunney 2022-10-14 16:37:29 -07:00
parent 5af19b7eed
commit 3d2d04b25e
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32 changed files with 897 additions and 276 deletions
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19
examples/system.c
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@ -7,13 +7,20 @@
│ • http://creativecommons.org/publicdomain/zero/1.0/ │
╚─────────────────────────────────────────────────────────────────*/
#endif
#include "libc/dce.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
/**
* @fileoverview Cosmopolitan Command Interpreter Demo
* Yes this works on Windows.
*/
STATIC_YOINK("_tr");
STATIC_YOINK("_sed");
int main(int argc, char *argv[]) {
if (IsWindows()) {
system("notepad");
} else {
system("ls | tr a-z A-Z");
}
system("x=world\n"
"echo hello $x |\n"
" tr a-z A-Z |\n"
" sed 's/\\(.\\)/\\1 /g'");
}