Linux 从右侧提取两个/之间的字符串

从右侧提取两个/之间的字符串

命令准备：

输入：-[目录名称不是常量]

示例1:-

/dir1/dir2/

/dir1/dir2/dir3/dir4/

nohup dsmc arch /dir1/dir2/ -subdir=yes > /tsm/backuplogs/dir2_`date +%d%m%y_%H_%M`.log &

nohup dsmc arch /dir1/dir2/dir3/dir4/ -subdir=yes > /tsm/backuplogs/dir4_`date +%d%m%y_%H_%M`.log &

示例2:-

/dir1/dir2/

/dir1/dir2/dir3/dir4/

nohup dsmc arch /dir1/dir2/ -subdir=yes > /tsm/backuplogs/dir2_`date +%d%m%y_%H_%M`.log &

nohup dsmc arch /dir1/dir2/dir3/dir4/ -subdir=yes > /tsm/backuplogs/dir4_`date +%d%m%y_%H_%M`.log &

我希望输出如下

示例1输出：-

/dir1/dir2/

/dir1/dir2/dir3/dir4/

nohup dsmc arch /dir1/dir2/ -subdir=yes > /tsm/backuplogs/dir2_`date +%d%m%y_%H_%M`.log &

nohup dsmc arch /dir1/dir2/dir3/dir4/ -subdir=yes > /tsm/backuplogs/dir4_`date +%d%m%y_%H_%M`.log &

示例2输出：-

/dir1/dir2/

/dir1/dir2/dir3/dir4/

nohup dsmc arch /dir1/dir2/ -subdir=yes > /tsm/backuplogs/dir2_`date +%d%m%y_%H_%M`.log &

nohup dsmc arch /dir1/dir2/dir3/dir4/ -subdir=yes > /tsm/backuplogs/dir4_`date +%d%m%y_%H_%M`.log &

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使用

basename

程序从路径中提取最后一个目录，如下所示：

上述行将输出：

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尝试以下操作以提取子字符串：

basename /dir1/dir2/dir3/dir4/

输出：

dir4 输出

dir4 dir4

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您应该避免使用旧的和不推荐使用的back tics，请使用以下括号：

\u\$（日期+%d%m%y\u%H\u%m\）。log