不能从bash脚本中的rsync中排除目录

问题描述：

我写了一个bash脚本来备份我的项目目录，但排除选项不起作用。不能从bash脚本中的rsync中排除目录

backup.sh

#!/bin/sh 
DRY_RUN="" 
if [ $1="-n" ]; then 
    DRY_RUN="n" 
fi 

OPTIONS="-a"$DRY_RUN"v --delete --delete-excluded --exclude='/bin/'" 
SOURCE="/home/vikram/Documents/sem4/oop/lab/java_assignments/student_information_system/" 
DEST="/home/vikram/Documents/sem4/oop/lab/java_assignments/student_information_system_backup" 

rsync $OPTIONS $SOURCE $DEST

当我分别执行所述终端上的命令，它的工作原理。

vikram:student_information_system$ rsync -anv --delete --delete-excluded --exclude='/bin/' /home/vikram/Documents/sem4/oop/lab/java_assignments/student_information_system/ /home/vikram/Documents/sem4/oop/lab/java_assignments/student_information_system_backup 
sending incremental file list 
deleting bin/student_information_system/model/StudentTest.class 
deleting bin/student_information_system/model/Student.class 
deleting bin/student_information_system/model/ 
deleting bin/student_information_system/ 
deleting bin/ 
./ 
.backup.sh.swp 
backup.sh 
backup.sh~ 

sent 507 bytes received 228 bytes 1,470.00 bytes/sec 
total size is 16,033 speedup is 21.81 (DRY RUN) 
vikram:student_information_system$

顺便说一句：取代'[$ 1 = “ - N”]在你的代码的其余部分通过''[ “$ 1”= “-n”]'和引用变量。 – Cyrus

答

周围是要排除是造成问题的原因（在此answer解释）的目录名称中的单引号。
另外，我将所有选项存储在数组中，如here所述。

删除单引号，将选项存储在数组中，根据@Cyrus在注释中建议的双引号变量解决了问题。
另外我不得不将#!/bin/sh更改为#!/bin/bash。
更新脚本：

#!/bin/bash 
DRY_RUN="" 
if [ "$1" = "-n" ]; then 
    DRY_RUN="n" 
fi 

OPTS=("-a""$DRY_RUN""v" "--delete" "--delete-excluded" "--exclude=/bin/") 
SRC="/home/vikram/Documents/sem4/oop/lab/java_assignments/student_information_system/" 
DEST="/home/vikram/Documents/sem4/oop/lab/java_assignments/student_information_system_backup" 

echo "rsync ${OPTS[@]} $SRC $DEST" 
rsync "${OPTS[@]}" "$SRC" "$DEST"

不能从bash脚本中的rsync中排除目录

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