[英]selecting text using awk command
USERNAME=root
HOSTS="192.168.122.91 192.168.122.102 192.168.122.180"
SCRIPT="df -h /dev/vda3 | grep '/export/brick' | awk '{print $2}' ";
for HOSTNAME in ${HOSTS} ; do
(ssh -l ${USERNAME} ${HOSTNAME} "${SCRIPT}")
done
输出是:
/dev/vda3 27G 722M 26G 3% /export/brick
期望输出= 27G
您需要转义$2
以使其在ssh连接中由awk
解释:
SCRIPT="df -h /dev/vda3 | grep '/export/brick' | awk '{print \$2}' ";
另外,请注意你可以使用awk
的grep
条件稍微挤一下:
SCRIPT="df -h /dev/vda3 | awk '/export\/brick/{print \$2}' ";
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