1 files changed, 37 insertions, 0 deletions
diff --git a/bin/sls b/bin/sls
new file mode 100755
index 00000000..eb376cbc
--- /dev/null
+++ b/bin/sls
@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+
+#
+# sls(1) -- Print all the non-wildcard Host names (first one per line) from
+# an ssh_config(5) file, defaulting to $HOME/.ssh/config.
+#
+# Author: Tom Ryder <tom@sanctum.geek.nz>
+# Copyright: 2014
+# License: Public domain
+#
+
+# Start by assuming we should parse all hosts
+declare -i sls
+sls=1
+
+# Iterate through the config
+while read -r option value _ ; do
+
+    # "### sls" and "### nosls" toggles parsing
+    case $option in
+        '###')
+            case $value in
+                nosls)
+                    sls=0
+                    ;;
+                sls)
+                    sls=1
+                    ;;
+            esac
+            ;;
+        'Host')
+            if ((sls)) && [[ $value != *[^[:alnum:]_-]*  ]] ; then
+                printf '%s\n' "$value"
+            fi
+            ;;
+    esac
+done < "${1:-$HOME/.ssh/config}"