fix bugs caused by unquoted variable(s); remove unnecessary grep in ips func

plugins/available/base.plugin.bash

@@ -5,7 +5,7 @@ function ips ()
 {
     about 'display all ip addresses for this host'
     group 'base'
-    ifconfig | grep "inet " | awk '{ print $2 }'
+    ifconfig | awk '/inet /{ print $2 }'
 }
 
 function down4me ()
@@ -210,5 +210,5 @@ function buf ()
     group 'base'
     local filename=$1
     local filetime=$(date +%Y%m%d_%H%M%S)
-    cp ${filename} ${filename}_${filetime}
+    cp "${filename}" "${filename}_${filetime}"
 }

plugins/available/dirs.plugin.bash

@@ -23,7 +23,7 @@ alias 8="pushd +8"
 alias 9="pushd +9"
 
 # Clone this location
-alias pc="pushd \`pwd\`"
+alias pc="pushd \$(pwd)"
 
 # Push new location
 alias pu="pushd"
@@ -73,7 +73,7 @@ G () {				# goes to distination dir otherwise , stay in the dir
     example '$ G ..'
     group 'dirs'
 
-    cd ${1:-$(pwd)} ;
+    cd "${1:-$(pwd)}" ;
 }
 
 S () {				# SAVE a BOOKMARK