Move awk scripts into shb(1)

1 files changed, 22 insertions, 0 deletions

diff --git a/bin/rndi.awk b/bin/rndi.awk
new file mode 100644
index 00000000..337498cb
--- /dev/null
+++ b/bin/rndi.awk
@@ -0,0 +1,22 @@
+# Get a low-quality random number between two integers. Depending on the awk
+# implementation, if you don't provide a third argument (a seed), you might get
+# very predictable random numbers based on the current epoch second.
+
+BEGIN {
+
+    # Seed with the third argument if given
+    if (ARGV[3]) {
+        srand(ARGV[3])
+    }
+
+    # If not, just seed with what is probably a date/time-derived value
+    else {
+        srand()
+    }
+
+    # Print a random integer bounded by the first and second arguments
+    print int(ARGV[1]+rand()*(ARGV[2]-ARGV[1]+1))
+
+    # Bail before processing any lines
+    exit
+}