Question

我有以下脚本，我认为它应该遍历我读取的文件内容，但由于某种原因它在第一次迭代后退出。

#!/usr/bin/bash

    scriptDir=/soft/automation/scripts

    cd $scriptDir

    #LOOP THROUGH THE LIST OF HOSTS AND TEARDOWN/REBUILD EACH
    IFS=$IFS,
    while read -r name ip vlan image; do
    echo "$(date) : Beginning teardown of host ${name}_${vlan}..."
    echo "$(date) : Executing command: ./deploy_VM_PureFlex_Nstar.sh -d -n ${name}_${vlan}"
    ./deploy_VM_PureFlex_Nstar.sh -d -n ${name}_${vlan}
    exitCode=$?
    if [[ $exitCode -eq 0 ]]; then
    echo "$(date) : Teardown of host ${name}_${vlan} completed successfully (exit code: $exitCode).  Sleeping for 60 seconds..."
    else
    echo "$(date) : Teardown of host ${name}_${vlan} completed with errors (exit code: $exitCode).  Sleeping for 60 seconds..."
    fi
    sleep 60
    echo "$(date) : Beginning rebuild of vm for host $name"
    echo "$(date) : Executing command: ./deploy_VM_PureFlex_Nstar.sh -a -n ${name} -i ${ip} -v ${vlan} -r ${image} -p normal"
    ./deploy_VM_PureFlex_Nstar.sh -a -n ${name} -i ${ip} -v ${vlan} -r ${image} -p normal
    exitCode=$?
    if [[ $exitCode -eq 0 ]]; then
    echo "$(date) : Rebuild of vm for host ${name}_${vlan} completed successfully (exit code: $exitCode).  Sleeping for 60 seconds..."
    else
    echo "$(date) : Rebuild of vm for host ${name}_${vlan} completed with errors (exit code: $exitCode).  Sleeping for 60 seconds..."
    fi
    sleep 60
    done < ${scriptDir}/hosts.txt

hosts.txt文件的格式。

host01,192.168.1.1,5,BaseImg_DB_20150528
host02,192.168.1.2,5,BaseImg_APP_20150528

我觉得我错过了一些愚蠢的东西。问题是如果我注释掉它调用另一个脚本的2行它就像我期望的那样循环。调用脚本是个问题吗？

Answer 1

您的hosts.txt文件不符合POSIX标准，并且文件末尾不包含newline。你需要：

while read -r name ip vlan image || [ -n "$image" ]; do

为了阅读最后一行。见Why should files end with a newline?

Bash脚本没有按预期循环

1 个答案: