add ssh-loop shell helpers for FC infra

home/scripts/ssh-loop-fc.nix

@@ -0,0 +1,19 @@
+{pkgs, ...}:
+''
+ssh-loop () {
+    setopt shwordsplit
+    local hosts=$1
+    local cmd=$2
+
+    for x in $1; do echo $x; ${pkgs.openssh}/bin/ssh  $x.fcio.net -o StrictHostKeyChecking=no -C "$2"; done
+}
+
+ssh-loop-parallel () {
+    setopt shwordsplit
+    local hosts=$1
+    local cmd=$2
+
+    for x in $1; do echo $x; ${pkgs.openssh}/bin/ssh  $x.fcio.net -o StrictHostKeyChecking=no -C "$2" 2>&1 | sed -e "s/^/$x: /;" & done
+    wait
+}
+''