sh脚本：在挂载的文件系统中运行时没有输出

需要一些帮助来理解什么是错的 . 简而言之：我编写了一个bourne shell脚本，它创建了目标目录中源目录内容的链接 . 它在主机系统上运行良好但是当针对已安装的fs上的目录（来自chroot和本机系统）时，它不起作用并且根本不提供输出 .

细节：挂载fs：ext3，rw

主机系统：3.2.0-48-通用＃74-Ubuntu SMP GNU / Linux

为了缩小这个问题，以“/ usr”为例 .

主机系统中“/ usr”的权限：drwxr-xr-x

安装分区上“/ usr”的权限：drwxr-xr-x

试图从主机系统使用bash和dash . 相同的结果 - 适用于本机文件系统，不适用于已安装 .

脚本（cord.sh;在我的情况下从root运行）：

# !/bin/sh

SRCFOLDER=$2                    # folder with package installation
DESTFOLDER=$3                   # destination folder to install symlinks to ('/' - for base sys; '/usr' - userland)
TARGETS=$(ls $SRCFOLDER)        # targets to handle

SRCFOLDER=${SRCFOLDER%/}        # stripping slashes from the end, if they are present
DESTFOLDER=${DESTFOLDER%/}      #

##
## LINKING
##

if [ "$1" = "-c" ];
    then printf %s "$TARGETS" | while IFS= read -r line
        do
            current_target=$(file $SRCFOLDER/$line)     # had an issue with different output in different systems
            if [ "${current_target% }" = "$SRCFOLDER/$line: directory" ];   # stripping space helped
                then
                    mkdir -v $DESTFOLDER/$line    # if other package created it - it'll fail
                    /usr/local/bin/cord.sh -c $SRCFOLDER/$line $DESTFOLDER/$line                   # RECURSION
            else
                ln -sv $SRCFOLDER/$line $DESTFOLDER/$line   # will fail, if exists
            fi;
        done

##
## REMOVING LINKS
##

elif [ "$1" = "-d" ];
    then printf %s "$TARGETS" | while IFS= read -r line
        do
            current_target=$(file $SRCFOLDER/$line)
            if [ "${current_target% }" = "$SRCFOLDER/$line: directory" ];
                then
                    /usr/local/bin/cord.sh -d $SRCFOLDER/$line $DESTFOLDER/$line                   # RECURSION
            else
                rm -v $DESTFOLDER/$line
            fi;
        done


elif [ "$1" = "-h" ];
    then
        echo "Usage:"
        echo "cord -c /path/to/pkgdir /path/to/linkdir  -   create simlinks for package contents"
        echo "cord -d /path/to/pkgdir /path/to/linkdir  -   delete links for package"
        echo "cord -h                                   -   displays this help note"


else
    echo "Usage:"
    echo "cord -c /path/to/pkgdir /path/to/linkdir  -   create simlinks for package contents"
    echo "cord -d /path/to/pkgdir /path/to/linkdir  -   delete links for package"
    echo "cord -h                                   -   displays this help note"

fi;

最明显的建议是权限问题 . 但一切看起来都很清醒 . 也许我错过了什么？