Add "brew run" command

Signed-off-by: Alexander Barton <alex@barton.de>

diff --git a/cmd/brew-run b/cmd/brew-run
new file mode 100755 (executable)
index 0000000..a7104c9
--- /dev/null
+++ b/cmd/brew-run
@@ -0,0 +1,38 @@
+#!/bin/sh
+# 2016-01-06, alex@barton.de
+
+# Include "ax-common.sh":
+for dir in "$HOME/lib" "$HOME/.ax" /usr/local /opt/ax /usr; do
+       [ -z "$ax_common_sourced" ] || break
+       ax_common="${dir}/lib/ax/ax-common.sh"
+       [ -r "$ax_common" ] && source "$ax_common"
+done
+if [ -z "$ax_common_sourced" ]; then
+       function ax_msg() {
+               echo "$2"
+       }
+       function ax_abort() {
+               ax_msg - "$@"
+               exit 1
+       }
+fi
+unset dir ax_common ax_common_sourced
+
+ax_msg - "Updating Homebrew installation ..."
+brew update || ax_abort "Update failed!"
+echo
+
+outdated=$( brew outdated --quiet | wc -l | tr -d '\t ' )
+if [ $outdated -gt 0 ]; then
+       ax_msg - "$outdated formula outdated:"
+       brew outdated || ax_abort "Failed to list outdated packages!"
+       echo
+       brew upgrade --all || ax_abort "Upgrade failed!"
+       brew linkapps --local || ax_abort "Linking of applications failed!"
+
+       echo
+       brew cleanup || ax_abort "\"brew cleanup\" failed!"
+       brew prune || ax_abort "\"brew prune\" failed!"
+else
+       ax_msg - "Nothing outdated."
+fi