`cat` and pipe diet

cdist/conf/explorer/cpu_cores

@@ -30,7 +30,7 @@ case "$os" in
 
     *)
         if [ -r /proc/cpuinfo ]; then
-            cores="$(cat /proc/cpuinfo | grep "core id" | sort | uniq | wc -l)"
+            cores="$(grep "core id" /proc/cpuinfo | sort | uniq | wc -l)"
             if [ ${cores} -eq 0 ]; then
                 cores="1"
             fi

cdist/conf/explorer/cpu_sockets

@@ -30,7 +30,7 @@ case "$os" in
 
     *)
     if [ -r /proc/cpuinfo ]; then
-        sockets="$(cat /proc/cpuinfo | grep "physical id" | sort | uniq | wc -l)"
+        sockets="$(grep "physical id" /proc/cpuinfo | sort | uniq | wc -l)"
         if [ ${sockets} -eq 0 ]; then
             sockets="$(cat /proc/cpuinfo | grep "processor" | wc -l)"
         fi

cdist/conf/explorer/memory

@@ -31,7 +31,7 @@ case "$os" in
 
     *)
     if [ -r /proc/meminfo ]; then
-        echo "$(cat /proc/meminfo | grep "MemTotal:" | awk '{print $2}')"
+        echo "$(grep "MemTotal:" /proc/meminfo | awk '{print $2}')"
     fi
     ;;
 esac