From: Colin P. Mccabe <colin@cmccabe.xyz>
Date: Tue, 29 Nov 2016 22:53:29 +0000 (-0800)
Subject: dssh: add the ability to execute arbitrary commands
X-Git-Url: http://club.cc.cmu.edu/~cmccabe/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=952f54e48416e47645cd277de86774525e74c40f;p=cmccabe-bin

dssh: add the ability to execute arbitrary commands
---

diff --git a/dssh b/dssh
index a00ca4d..710fdac 100755
--- a/dssh
+++ b/dssh
@@ -35,6 +35,12 @@ while getopts  "hi:n:" flag; do
         exit 1;;
     esac
 done
+shift $(expr $OPTIND - 1)
+if [ $# -eq 0 ]; then
+    RUN_COMMAND="/bin/bash"
+else
+    RUN_COMMAND="${@}"
+fi
 
 which docker &>/dev/null || die "docker must be on the PATH."
 
@@ -55,4 +61,4 @@ else
         die "failed to find a docker image named ${DOCKER_IMAGE_NAME}"
 fi
 
-docker exec -it "${DOCKER_IMAGE_ID}" /bin/bash
+docker exec -it "${DOCKER_IMAGE_ID}" ${RUN_COMMAND}