linux命令：awk & sed 提取特定行和特定列

root@OpenWrt:/# cat proc/partitions | grep "mmcblk0"179 0 3866624 mmcblk0179 1 4574 mmcblk0p1179 2 21250 mmcblk0p2179 3 4096 mmcblk0p3179 4 131072 mmcblk0p4179 32 512 mmcbl...

Clearfix_Xia

8224人浏览 · 2021-02-04 11:14:17

Clearfix_Xia · 2021-02-04 11:14:17 发布

root@OpenWrt:/# cat proc/partitions | grep "mmcblk0"
179        0    3866624 mmcblk0
179        1       4574 mmcblk0p1
179        2      21250 mmcblk0p2
179        3       4096 mmcblk0p3
179        4     131072 mmcblk0p4
179       32        512 mmcblk0rpmb

cat proc/partitions | grep mmcblk0 | sed -n "1p" | awk {'print $3'} //提取第一行第三列 1p - 第一行 $3 - 第三列
3866624

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写于20210204 Xia