shell学习笔记（1）
${string%substring} 把下面所有系统中文件的文件名中的findished内容去掉# cd testdir/
# touch stu_102999_1_finished.jpg stu_102999_2_finished.jpg stu_102999_3_finished.jpg stu_102999_4_finished.jpg stu_102999_5_finished.jpg
# ls -l
total 0
-rw-r--r-- 1 root root 0 Nov 18 06:11 stu_102999_1_finished.jpg
-rw-r--r-- 1 root root 0 Nov 18 06:11 stu_102999_2_finished.jpg
-rw-r--r-- 1 root root 0 Nov 18 06:11 stu_102999_3_finished.jpg
-rw-r--r-- 1 root root 0 Nov 18 06:11 stu_102999_4_finished.jpg
-rw-r--r-- 1 root root 0 Nov 18 06:11 stu_102999_5_finished.jpg
改单个文件：
# file="stu_102999_1_finished.jpg"
# mv $file ${file%finished*}.jpg
# ll
total 0
-rw-r--r-- 1 root root 0 Nov 18 06:11 stu_102999_1_.jpg
批量：
# for file in `ls *.jpg`;do mv $file ${file%finished*}.jpg;done
# ll
total 0
-rw-r--r-- 1 root root 0 Nov 18 06:11 stu_102999_1_.jpg.jpg
-rw-r--r-- 1 root root 0 Nov 18 06:11 stu_102999_2_.jpg
-rw-r--r-- 1 root root 0 Nov 18 06:11 stu_102999_3_.jpg
-rw-r--r-- 1 root root 0 Nov 18 06:11 stu_102999_4_.jpg
-rw-r--r-- 1 root root 0 Nov 18 06:11 stu_102999_5_.jpg
#
# vim chang_file_name.sh
for file in `ls *.jpg`;
do
mv $file ${file%finished*}.jpg
done
# echo ${file%.html}.HTML
a.HTML
# echo ${file%.html} | tr "" ""
A
页:
[1]