Linux 如何在shell脚本中将每日磁盘使用情况导出为csv格式？

我的脚本如下。当我们运行脚本时，它会自动将磁盘空间使用情况保存在单独的单元格中

SIZES_1=`df -h | awk 'FNR == 1 {print $1","$2","$3","$4","$5","$6}'`
SIZES_2=`df -h | awk 'FNR == 2 {print $1","$2","$3","$4","$5","$6}'`
SIZES_3=`df -h | awk 'FNR == 3 {print $1","$2","$3","$4","$5","$6}'`
SIZES_4=`df -h | awk 'FNR == 4 {print $1","$2","$3","$4","$5","$6}'`
SIZES_5=`df -h | awk 'FNR == 5 {print $1","$2","$3","$4","$5","$6}'`
SIZES_6=`df -h | awk 'FNR == 6 {print $1","$2","$3","$4","$5","$6}'`
SIZES_7=`df -h | awk 'FNR == 7 {print $1","$2","$3","$4","$5","$6}'`
SIZES_8=`df -h | awk 'FNR == 8 {print $1","$2","$3","$4","$5","$6}'`
echo `date +%Z-%Y-%m-%d_%H-%M-%S` >>/home/jeevagan/test_scripts/sizes/excel.csv
echo "$SIZES_1" >> /home/jeevagan/test_scripts/sizes/excel.csv
echo "$SIZES_2" >> /home/jeevagan/test_scripts/sizes/excel.csv
echo "$SIZES_3" >> /home/jeevagan/test_scripts/sizes/excel.csv
echo "$SIZES_4" >> /home/jeevagan/test_scripts/sizes/excel.csv
echo "$SIZES_5" >> /home/jeevagan/test_scripts/sizes/excel.csv
echo "$SIZES_6" >> /home/jeevagan/test_scripts/sizes/excel.csv
echo "$SIZES_7" >> /home/jeevagan/test_scripts/sizes/excel.csv
echo "$SIZES_8" >> /home/jeevagan/test_scripts/sizes/excel.csv

这个脚本适合我的机器

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我的疑问是，如果其他人的机器有许多文件系统，我的脚本将无法获取所有使用的文件系统。如何自动获取所有文件系统？

假设您需要所有文件系统，您可以将其简化为：

printf '%s\n' "$(date +%Z-%Y-%m-%d_%H-%M-%S)" >> excel.csv
df -h | awk '{print $1","$2","$3","$4","$5","$6}' >> excel.csv

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我会简化为

{ date +%Z-%F_%H-%M-%S; df -h | tr -s ' ' ','; } >> excel.csv

• 对命令进行分组，以便只需要一个重定向
• 压缩空格并使用

  tr

• 不需要

  echo`date`

  或类似内容：它与

  date

• 日期+%Y-%m-%d

  与

  日期+%F

请注意，

df-h

输出的第一行有一个小缺陷，它最初看起来像这样

已使用的文件系统大小可用率已安装%

在最后一列的标题中有空格，因此

文件系统，大小，已用，可用，使用%，已装入，打开

加上一个逗号。然而，最初的awk解决方案只是切断了该行的最后一个字。类似地，路径中的空间也会导致此解决方案失败

要解决逗号问题，您可以运行

sed -i 's/Mounted,on$/Mounted on/' excel.csv

时不时地

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另一方面，替换awk中的所有字段分隔符，而不是

awk '{print $1","$2","$3","$4","$5","$6}'

你可以用

awk 'BEGIN { OFS = "," } { $1 = $1; print }'

或者，更短一些

awk -v OFS=',' '{$1=$1}1'

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对于标题问题，只需使用

sed-n'2，$p'