Bash 字符串数组

Question

我有一个 bash 脚本，它收集 snmp 信息并搜索关键短语以发出警报。

我使用snmp命令从网络设备输出日志，这是代码示例和原始输出-

/usr/bin/snmpwalk -v 2c -c public $HOST .1.3.6.1.3.94.1.11.1.9.32.128.0.192.255

SNMPv2-SMI::experimental.94.1.11.1.9.32.128.0.192.255.27.228.239.0.0.0.0.0.0.0.0.251 = STRING: "Host link down. (port: 1)"
SNMPv2-SMI::experimental.94.1.11.1.9.32.128.0.192.255.27.228.239.0.0.0.0.0.0.0.0.252 = STRING: "Host link up. (port: 1, speed: 8 Gbps, number of loop ID(s):"
SNMPv2-SMI::experimental.94.1.11.1.9.32.128.0.192.255.27.228.239.0.0.0.0.0.0.0.0.253 = STRING: "A scrub-vdisk job was started. (vdisk: test, SN: 00c0ff1bf86d0000a6c09c5600000000)"
SNMPv2-SMI::experimental.94.1.11.1.9.32.128.0.192.255.27.228.239.0.0.0.0.0.0.0.0.254 = STRING: "A scrub-vdisk job completed. No errors were found. (vdisk: test, SN: 00c0ff1bf86d0000a6c09c5600000000)"
SNMPv2-SMI::experimental.94.1.11.1.9.32.128.0.192.255.27.228.239.0.0.0.0.0.0.0.0.255 = STRING: "Host link down. (port: 1)"

在我的 bash 脚本中，我从中创建了一个数组并去掉了开始处的凸起-

declare -a LOG=($(/usr/bin/snmpwalk -v 2c -c public $HOST $OID | cut -d" " -f 4-))

这创建了这个-

"Host link down. (port: 1)"
"Host link up. (port: 1, speed: 8 Gbps, number of loop ID(s):"
"A scrub-vdisk job was started. (vdisk: test, SN: 00c0ff1bf86d0000a6c09c5600000000)"
"A scrub-vdisk job completed. No errors were found. (vdisk: test, SN: 00c0ff1bf86d0000a6c09c5600000000)"
"Host link down. (port: 1)"

我的问题是这个数组将每个单词都视为一个单独的条目，所以我的实际输出是这样的-

"Host 
link 
down. 
(port: 
1)"

因此，每当我搜索单个单词时，它都能正常工作，但当我搜索短语时，它就会中断。

理想情况下，我希望它做的是将每一行文本作为其自己的条目存储在数组中，就像这样-

declare -a LOG=('"Host link down. (port: 1)"' '"Host link up. (port: 1, speed: 8 Gbps, number of loop ID(s):"') etc

我只是不确定如何操纵原始声明行来执行此操作...

这是我所有的代码-

HOST="10.10.10.10"
OID=".1.3.6.1.3.94.1.11.1.9.32.128.0.192.255"
declare -a CRITICAL=('errors' 'An event was reported by a disk drive')

declare -a LOG=($(/usr/bin/snmpwalk -v 2c -c public $HOST $OID | cut -d" " -f 4-))

for RESULT in `echo ${LOG[*]}`
    do
    for WORD in `echo ${CRITICAL[*]}`
        do
            case "$RESULT" in
                *$WORD*)
                    OUTPUT+="$RESULT -CRITICAL "
                    ;;
                *)
                    OUTPUT+="$RESULT "
            esac    

        done
done

Answer 1

如果您将 IFS (internal field separator) 变量设置为 \n，它应该会达到您想要的效果。

IFS=$'\n' declare -a LOG=($(/usr/bin/snmpwalk -v 2c -c public $HOST $OID | cut -d" " -f 4-))

您迭代结果的方式也存在问题。尝试以下操作，这样您就不会将各个行拆分为单词（* 运算符会这样做）。

for RESULT in "${LOG[@]}"
    do
    for WORD in "${CRITICAL[@]}"
        do

Bash 字符串数组

Bash array of strings

arrays

bash

snmp