如何在 shell 脚本中将每日磁盘使用情况导出为 csv 格式？

Question

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

SIZES_1=`df -h | awk 'FNR == 1 {print ","","","","","}'`
SIZES_2=`df -h | awk 'FNR == 2 {print ","","","","","}'`
SIZES_3=`df -h | awk 'FNR == 3 {print ","","","","","}'`
SIZES_4=`df -h | awk 'FNR == 4 {print ","","","","","}'`
SIZES_5=`df -h | awk 'FNR == 5 {print ","","","","","}'`
SIZES_6=`df -h | awk 'FNR == 6 {print ","","","","","}'`
SIZES_7=`df -h | awk 'FNR == 7 {print ","","","","","}'`
SIZES_8=`df -h | awk 'FNR == 8 {print ","","","","","}'`
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。

我的疑问是，如果别人的机器有很多文件系统，我的脚本将无法获取所有文件系统的使用情况。如何让它自动抓取所有这些？

Answer 1

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 ","","","","","}' >> excel.csv

Answer 2

我会将其简化为

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

组命令，因此只需要一个重定向
压缩 space 并使用 tr
不需要 echo `date` 或类似的：它与 date
date +%Y-%m-%d 等同于 date +%F

请注意，df -h 输出的第一行有一个小缺陷，最初看起来像这样

Filesystem          Size  Used Avail Use% Mounted on

在最后一栏的标题中有一个space，所以变成了

Filesystem,Size,Used,Avail,Use%,Mounted,on

多了一个逗号。不过，原始的 awk 解决方案只是切断了该行的最后一个字。同样，路径中的 spaces 会使该解决方案失败。

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。

顺便说一句，替换 awk 中的所有字段分隔符，而不是

awk '{print ","","","","","}'

你可以使用

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

或者，更短，

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

如何在 shell 脚本中将每日磁盘使用情况导出为 csv 格式？

How to export daily disk usage to csv format in shell scripting?

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