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考虑下面的代码片段在函数内部:猛砸无法访问返回代码
local -r LSBLK_FAILED="Lsblk failed"
for f in $(lsblk -lno MOUNTPOINT "$DEVPATH"); do
sudo umount "$f";
RET=$?
if (($RET != 0)); then
echo "Unable to dismount $f - error $UNABLE_DISMOUNT_PARTITION"
return $UNABLE_DISMOUNT_PARTITION
fi
done
if [[ "$f" -eq "$LSBLK_FAILED" ]]; then
echo "Problem running Lsblk"
fi
我的问题是,我不能看到如何访问返回代码为lsblk命令。我可以检测命令是否失败,但我无法访问实际的返回码。任何人都可以建议我如何做到这一点?