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-rw-r--r--re.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/re.c b/re.c
new file mode 100644
index 0000000..07b6846
--- /dev/null
+++ b/re.c
@@ -0,0 +1,35 @@
+#include <err.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int
+main(int argc, char *argv[])
+{
+ char ans[10], file[30];
+ FILE *fp;
+ int i;
+
+ if (argc-1 == 0) {
+ fprintf(stderr, "usage: %s file ...\n", argv[0]);
+ return 1;
+ }
+
+ sprintf(file, "/var/tmp/re.%d", getppid());
+
+ if (!access(file, F_OK)) {
+ do
+ fprintf(stderr, "%s already exists; overwrite? ", file);
+ while (!gets(ans) || !*ans);
+ if (ans[0] != 'y') return 1;
+ }
+
+ if (!(fp = fopen(file, "w")))
+ err(1, "fopen");
+
+ for (i = 1; i < argc; i++) {
+ fprintf(fp, "%s\n", argv[i]);
+ printf("%s\n", argv[i]);
+ }
+
+ fclose(fp);
+}