Dpkg-reconfigure in BASH

Question

我最近完成了一个脚本，该脚本重新配置了debian stable（7.3）系统上的所有软件包。我正在使用命令

    dpkg-reconfigure -pcritical -a --force

一切都很好，但是今天我对代码进行了一些更改（我认为它们没有关系），现在我遇到了这个错误：

Can't exec "dpkg-query": Not a directory at /usr/sbin/dpkg-reconfigure line 98.
Can't exec "dpkg": Not a directory at /usr/sbin/dpkg-reconfigure line 82.
Use of uninitialized value $_ in pattern match (m//) at /usr/sbin/dpkg-reconfigure line 83.
Use of uninitialized value $_ in pattern match (m//) at /usr/sbin/dpkg-reconfigure line 84.
Use of uninitialized value $_ in pattern match (m//) at /usr/sbin/dpkg-reconfigure line 85.
Use of uninitialized value $_ in pattern match (m//) at /usr/sbin/dpkg-reconfigure line 86.
Can't exec "dpkg-query": Not a directory at /usr/sbin/dpkg-reconfigure line 98.
Can't exec "dpkg": Not a directory at /usr/sbin/dpkg-reconfigure line 82.
Use of uninitialized value $_ in pattern match (m//) at /usr/sbin/dpkg-reconfigure line 83.
Use of uninitialized value $_ in pattern match (m//) at /usr/sbin/dpkg-reconfigure line 84.
Use of uninitialized value $_ in pattern match (m//) at /usr/sbin/dpkg-reconfigure line 85.
Use of uninitialized value $_ in pattern match (m//) at /usr/sbin/dpkg-reconfigure line 86.
Can't exec "dpkg-query": Not a directory at /usr/sbin/dpkg-reconfigure line 98.
Can't exec "dpkg-query": Not a directory at /usr/sbin/dpkg-reconfigure line 202.
readline() on closed filehandle QUERY at /usr/sbin/dpkg-reconfigure line 204.

有成千上万的线充满类似的线（这是最后一条线）。该系统以runlevel 1-单用户的形式运行，作为用户根。另一个有趣的是，DPKG退出代码仍然是0。

感谢您提前的帮助。

编辑：这是脚本

#!/bin/bash
DPKG_RECONFIG_PATH=/usr/sbin/dpkg-reconfigure
# Function for checking critical executables (exits on error)
chk_crit ()
{
TARGET=$1
PATH=$2
if [ -e $PATH ] # Pass 1 - checking existence
then printf "$TARGET existsn"
else
    printf "$TARGET doesn't exist!n"
    exit
fi
if [ -x $PATH ] # Pass 2 - checking execution permissions
then
    printf "$TARGET is executablen"
else
    printf "$TARGET is not executable, attempting chmod!n"
    chmod 755 $TARGET_PATH
    CHMOD_EXIT=$?
    if [ $CHMOD_EXIT = 0 ] # Checking if chmod has succeeded
    then
        printf "chmod succeededn"
else
        printf "chmod failed, $TARGET is unusable!n"
        exit
    fi
fi
}
chk_crit dpkg-reconfigure $DPKG_RECONFIG_PATH
# Reconfiguring all packages, only asking critical questions
$DPKG_RECONFIG_PATH -pcritical -a --force
DPKG_EXIT=$?
if [ $DPKG_EXIT = 0 ]
then printf "Reconfiguration succeededn"
else printf "Reconfiguration failedn"
exit $DPKG_EXIT
fi
exit

Answer 1

，对不起，因为这绝对是我的错误。谢谢您所有帮助我认识该错误的人。

脚本不起作用，因为我意外使用$PATH作为我的自定义变量之一的名称。它重置实际$PATH并防止DPKG正确执行。现在，我将其更正为$TARGET_PATH，一切正常。再次，对不起。