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-rw-r--r--Makefile2
-rw-r--r--groups.sh11
2 files changed, 12 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 25b98f8..42f565a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
.POSIX:
-PROGRAMS=arch base64 factor hostid mktemp nproc pinky printenv readlink \
+PROGRAMS=arch base64 factor groups hostid mktemp nproc pinky printenv readlink \
seq shuf stat stdbuf sync tac uptime users vdir yes
all: $(PROGRAMS)
diff --git a/groups.sh b/groups.sh
new file mode 100644
index 0000000..52606d2
--- /dev/null
+++ b/groups.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+if [ $# -eq 0 ]; then
+ exec id -Gn
+fi
+
+while [ $# -gt 0 ]; do
+ printf '%s : ' $1
+ id -Gn $1
+ shift
+done