Merge pull request #2602 from wqxiang88/master

Compatible with Ubuntu 17

scripts/eosio_build_ubuntu.sh

@@ -2,14 +2,14 @@
 	OS_MAJ=`echo "${OS_VER}" | cut -d'.' -f1`
 	OS_MIN=`echo "${OS_VER}" | cut -d'.' -f2`
 
-	MEM_MEG=$( free -m | grep Mem | tr -s ' ' | cut -d\  -f2 )
-	CPU_SPEED=$( lscpu | grep "MHz" | tr -s ' ' | cut -d\  -f3 | cut -d'.' -f1 )
-	CPU_CORE=$( lscpu | grep "^CPU(s)" | tr -s ' ' | cut -d\  -f2 )
+	MEM_MEG=$( free -m | grep Mem | tr -s ' ' | cut -d\  -f2 || cut -d' ' -f2 )
+	CPU_SPEED=$( lscpu | grep -m1 "MHz" | tr -s ' ' | cut -d\  -f3 || cut -d' ' -f3 | cut -d'.' -f1 )
+	CPU_CORE=$( lscpu | grep "^CPU(s)" | tr -s ' ' | cut -d\  -f2 || cut -d' ' -f2 )
 
 	MEM_GIG=$(( (($MEM_MEG / 1000) / 2) ))
 	JOBS=$(( ${MEM_GIG} > ${CPU_CORE} ? ${CPU_CORE} : ${MEM_GIG} ))
 
-	DISK_INSTALL=`df -h . | tail -1 | tr -s ' ' | cut -d\  -f1`
+	DISK_INSTALL=`df -h . | tail -1 | tr -s ' ' | cut -d\  -f1 || cut -d' ' -f1`
 	DISK_TOTAL_KB=`df . | tail -1 | awk '{print $2}'`
 	DISK_AVAIL_KB=`df . | tail -1 | awk '{print $4}'`
 	DISK_TOTAL=$(( $DISK_TOTAL_KB / 1048576 ))
@@ -324,4 +324,4 @@ mongodconf
 		printf '\texport PATH=${HOME}/opt/mongodb/bin:$PATH\n'
 		printf "\tcd ${HOME}/eos/build; make test\n\n"
 	return 0
-	}
+	}
\ No newline at end of file