Bash不能捕获ssh错误 [英] Bash don't capture ssh errors

问题描述

如果我跑步

mapfile -t array_files < <(ssh -i key user@host "find / -name search -type f")

并将结果打印到$?中，即使命令失败，我也收到0.

and print the results in $?, I receive 0 even when the command fail.

推荐答案

使用bash.

# disable job control and enable lastpipe to run mapfile in current environment
set +m; shopt -s lastpipe

# feed array_files with the output of your ssh/find command
ssh ... | mapfile -t array_files

# returncode of first command in pipe (here ssh)
echo "${PIPESTATUS[0]}"

# content of array array_files
declare -p array_files

在脚本中，默认情况下，作业控件处于禁用状态.

In a script job control is disabled by default.

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