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-rw-r--r--toys/posix/cat.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/toys/posix/cat.c b/toys/posix/cat.c
index 78881c4c..3644c4f9 100644
--- a/toys/posix/cat.c
+++ b/toys/posix/cat.c
@@ -11,6 +11,7 @@ config CAT
default y
help
usage: cat [-u] [file...]
+
Copy (concatenate) files to stdout. If no files listed, copy from stdin.
Filename "-" is a synonym for stdin.