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-rw-r--r--echo.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/echo.c b/echo.c
index 91f17aa0f..2405d0ae1 100644
--- a/echo.c
+++ b/echo.c
@@ -25,6 +25,14 @@
#include "internal.h"
#include <stdio.h>
+static const char uname_usage[] =
+ "echo [-neE] [ARG ...]\n\n"
+ "Prints the specified ARGs to stdout\n\n"
+ "Options:\n"
+ "\t-n\tsuppress trailing newline\n"
+ "\t-e\tinterpret backslash-escaped characters (i.e. \\t=tab etc)\n"
+ "\t-E\tdisable interpretation of backslash-escaped characters\n";
+
extern int
echo_main(int argc, char** argv)
{
@@ -45,6 +53,9 @@ echo_main(int argc, char** argv)
} else if (strcmp(p, "-E")==0) {
eflag = 0;
}
+ else if (strncmp(p, "--", 2)==0) {
+ usage( uname_usage);
+ }
else break;
ap++;
}