実行ファイルとスクリプト間の引数渡しの実験

argtest.c

// argtest.c
// 実行ファイルとスクリプト間の引数渡しの実験
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{
	if (argc < 2) {
		printf("%s: no input [OPTION]...\n", argv[0]);
		exit(EXIT_FAILURE);
	}

	switch (*argv[1]) {
		case 's':
			printf("%s argc=%d argv=\n", argv[0], argc);
			for (int i = 0; i < argc; i++) {
				printf("\targv[%d]=%s\n", i, argv[i]);
			}
			break;
		case 'e':
			if (argc < 3) {
				printf("%s: no input [OPTION] [COMMAND]...\n", argv[0]);
				exit(EXIT_FAILURE);
			}
			char cmd[254];
			memset(cmd, 0, sizeof(cmd));
			strncat(cmd, argv[2], strlen(argv[2]));
			for (int i = 3; i < argc; i++) {
				strncat(cmd, " \"", 2);
				strncat(cmd, argv[i], strlen(argv[i]));
				strncat(cmd, "\"", 1);
			}
			printf("cmd=%s\n", cmd);
			system(cmd);
			break;
		default:
			printf("%s: 認識できないオプション\'%s\'です", argv[0], argv[1]);
			printf("option:\n\ts\tshow argv\n\te\texecute argtest\n");
			break;
	}
	
	exit(EXIT_SUCCESS);
}

Makefile

# Makefile
argtest: argtest.c
	g++ -o argtest argtest.c
clean:
	rm -f argtest

script.sh

# script.sh
#!/bin/sh

echo "$0"
echo "	\$0=$0"
echo "	\$1=$1"
echo "	\$2=$2"
echo "	\$3=$3"
echo "	\$4=$4"
echo "	\$5=$5"

if [ "$2" = "end" ]; then
	exit 0
fi

./argtest $1 $2 $3 $4
./argtest "$1" "$2" "$3" "$4"

./script.sh s end $2 $3 $4
./script.sh s "end" "$2" "$3" "$4"