1 files changed, 36 insertions, 0 deletions
diff --git a/err.c b/err.c
new file mode 100644
index 0000000..2ae6008
--- /dev/null
+++ b/err.c
@@ -0,0 +1,36 @@
+/* Report Unix errors */
+#include <stdio.h>
+#include <errno.h>
+
+#if 0
+extern int sys_nerr;
+extern char *sys_errlist[];
+#endif
+
+main(argc,argv)
+int argc;
+char *argv[];
+
+{
+    int f,n;
+
+    if (argc==1)
+	{
+	fprintf(stderr,"%s:usage %s -t|err1 [.. errn]\n",argv[0],argv[0]);
+	exit(1);
+	}
+
+    if (!strcmp(argv[1],"-t"))
+	for(f=0;f<sys_nerr;f++)
+	    printf("%3d : %s\n",f,sys_errlist[f]);
+    else
+	for(f=1;f<argc;f++)
+	    {
+	    n=strtol(argv[f],(char **)NULL,0);
+
+	    if(n>=sys_nerr)
+		fprintf(stderr,"%s:errcode %d invalid!\n",argv[0],n);
+	    else
+		printf("%3d : %s\n",n,sys_errlist[n]);
+	    }
+}