Linux shell 提取文件名和目录名的方法

[root@node01 ~]# file=/dir1/dir2/dir3/my.file.txt
[root@node01 ~]# echo ${file#*/}
dir1/dir2/dir3/my.file.txt

[root@node01 ~]# echo ${file##*/}
my.file.txt

[root@node01 ~]# echo ${file#*.}
file.txt

[root@node01 ~]# echo ${file##*.}
txt

[root@node01 ~]# echo ${file%/*}
/dir1/dir2/dir3

[root@node01 ~]# echo ${file%%/*} 空值

[root@node01 ~]# echo ${file%.*}
/dir1/dir2/dir3/my.file

[root@node01 ~]# echo ${file%%.*}
/dir1/dir2/dir3/my

[root@node01 ~]# echo ${file:0:5}
/dir1

[root@node01 ~]# echo ${file:5:5}
/dir2

[root@node01 ~]# echo ${file/dir/path}
/path1/dir2/dir3/my.file.txt

[root@node01 ~]# echo ${file//dir/path}
/path1/path2/path3/my.file.txt