add options verbose/user/confdir

README.md

@@ -1,3 +1,10 @@
 # csc : cluster ssh command
 
 simple script to execute command over ssh on remote hosts with "dialog" DEBIAN_FRONTEND
+
+## Usage
+
+Usage: csc [OPTION]... [COMMAND]
+    -v  enable verbose mode
+    -c  specify config dir, default is /$HOME/.config/csc
+    -u  specify user, default is $USER

csc

@@ -1,27 +1,63 @@
-#!/usr/bin/env bash
+#!/bin/bash
 
 # csc : cluster ssh command
-# ./csc <command>
 # launch command over ssh on cluster hosts with "dialog" DEBIAN_FRONTEND
 
-VERBOSE=false
+# Usage : csc [OPTION]... [COMMAND]
+# options :
+# -v    enable verbose mode
+# -c    specify config dir, default is $HOME/.config/csc
+# -u    specify user, default is $USER
 
-# TODO clush like
-HOSTS="$HOME/.config/csc/hosts"
+# defaults
+verbose=false
+confdir="$HOME/.config/csc"
+user=$USER
 
-if [ ! -e "$HOSTS" ]
+# get options
+while getopts ":vc:u:" opt; do
+    case $opt in
+        v)
+            verbose=true
+            ;;
+        c)
+            confdir=$OPTARG
+            ;;
+        u)
+            user=$OPTARG
+            ;;
+        \?)
+            echo "Invalid option: -$OPTARG" >&2
+            exit 1
+            ;;
+        :)
+            echo "Option -$OPTARG requires an argument." >&2
+            exit 1
+            ;;
+    esac
+done
+
+# clean $@ of options
+shift $((OPTIND-1))
+
+hosts="$confdir/hosts"
+
+if [ ! -e "$hosts" ]
 then
-    echo "hosts file do not exists !"
+    echo "Error: hosts file do not exists !"
     exit
 fi
 
-COMMAND=$@
+cmd=$@
 
-if [ -z "$COMMAND" ]
+if [ -z "$cmd" ]
 then
-    echo "command is missing"
-    echo "USAGE: $0 <command>"
-    exit
+    echo "Error : command is missing"
+    echo "Usage: csc [OPTION]... [COMMAND]"
+    echo "  -v  enable verbose mode"
+    echo "  -c  specify config dir, default is $HOME/.config/csc"
+    echo "  -u  specify user, default is $USER"
+    exit 1
 fi
 
 # see http://askubuntu.com/questions/506158/unable-to-initialize-frontend-dialog-when-using-ssh
@@ -29,18 +65,18 @@ fi
 FRONTEND="TERM=$TERM DEBIAN_FRONTEND=dialog"
 #FRONTEND="DEBIAN_FRONTEND=readline"
 
-if [ "$VERBOSE" = true ]
+if [ "$verbose" = true ]
 then
     echo "will do :"
-    echo "for i in `cat $HOSTS`; do ssh -t \$i "$FRONTEND $COMMAND"; done"
+    echo "for i in `cat $hosts | grep -v '^#'`; do ssh -t $user@\$i "$FRONTEND $cmd"; done"
 fi
 
-for i in `cat $HOSTS`
+for i in `cat $hosts`
     do
     echo -e "\e[34m---------------\e[0m"
     echo -e "\e[34m$i\e[0m"
     echo -e "\e[34m---------------\e[0m"
-    ssh -t $i "$FRONTEND $COMMAND"
+    ssh -t $user@$i "$FRONTEND $cmd"
 done
 
 exit