independ echo

echo/Makefile

@@ -0,0 +1,28 @@
+all: echo
+
+clean:
+	rm -rf ../dist/echo ../dist/echo.tar ../dist/echo.tar.gz echo
+
+dist: ../dist/echo.tar.gz
+
+sane: echo.c ../include/sysexits.h
+	$(CC) -DDONT_USE_SYSTEM_SYSEXITS -o echo echo.c
+
+echo: echo.c
+	$(CC) -o echo echo.c
+
+../dist/echo: echo
+	mkdir -p ../dist/echo.tmp/bin/ ../dist/echo.tmp/share/man/man1/
+	cp echo ../dist/echo.tmp/bin/echo
+	cp echo.1 ../dist/echo.tmp/share/man/man1/echo.1
+	mv ../dist/echo.tmp ../dist/echo
+
+../dist/echo.tar: ../dist/echo
+	cd ../dist/echo && pax -w -x ustar . >../echo.tar.tmp
+	mv ../dist/echo.tar.tmp ../dist/echo.tar
+
+../dist/echo.tar.gz: ../dist/echo.tar
+	gzip -c <../dist/echo.tar >../dist/echo.tar.gz.tmp
+	mv ../dist/echo.tar.gz.tmp ../dist/echo.tar.gz
+
+.PHONY: all clean sane

echo/echo.1

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+.TH ECHO 1
+
+.SH NAME
+
+echo \(en echo arguments
+
+.SH SYNOPSIS
+
+echo
+.RB [ argument... ]
+
+.SH DESCRIPTION
+
+Echo echoes given arguments delimited by an ASCII blank, with a terminating newline.
+
+.SH BUGS
+
+Echo should not be used in scripts; printf(1) should be used in its place.
+
+.SH STANDARDS
+
+Echo does not recognize the escape sequences described in the X/Open System Interface Extension to POSIX.
+This is intended.
+
+.SH COPYRIGHT
+
+Public domain.

echo/echo.c

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+#include <sysexits.h>
+#include <stddef.h> /* NULL */
+#include <unistd.h> /* write(2) */
+#include "libio.h" /* fdprint(3) */
+
+int main(int argc, char **argv){
+
+	if(*argv == NULL)
+		return EX_OSERR;
+	
+	while(*++argv != NULL){
+		fdprint(1, *argv);
+
+		if(*(argv+1) != NULL)
+			write(1, " ", 1);
+	}
+	write(1, "\n", 1);
+	return EX_OK;
+}