<分区>
除某些情况外，我想禁用 rm 的使用。我在 .sh 文件中编写了一个名为 remove 的函数，它通过了我想在实际调用 rm 之前强加的某些检查。但是，仍然可以进入终端并简单地调用 rm 函数，而不是使用 remove。有没有办法禁用 rm 函数，除非被 remove 调用？我希望它就好像 rm 函数对登录到终端的用户不“存在”，所有“存在”的都是删除函数。
甚至可能更进一步，当用户调用 rm 时，它会在屏幕上打印一条语句，说明要使用 remove。
作为一个更广泛的问题，除了在某些情况下，是否有办法禁用终端命令？我知道我可以为 rm 创建一个别名来要求 root，但这是一种简单但不太方便的方法。
#!/bin/bash
function rm {
if [ $# -le 0 ]; then
echo "Error: no arguments specified."
else
hasDir=0
for arg in "$@"; do
if [ -d "$arg" ]; then hasDir=1; fi
done
ac="Action canceled."
resp=("y" "n" "e")
sure=" "
while [ "$sure" != "y" ] && [ "$sure" != "n" ]; do
read -p "PERMANENT ACTION. Are you sure? (y/n): " sure
done
if [ "$sure" == "n" ]; then echo "$ac"; return; fi
if [ $hasDir -eq 1 ]; then
direc=" "
validResp=0
while [ $validResp -eq 0 ]; do
read -p "Remove all sub-directories? (y/n/e): " direc
for ans in "${resp[@]}"; do
if [ "$direc" == "$ans" ]; then validResp=1; fi
done
done
if [ "$direc" == "e" ]; then echo "$ac"; return; fi
else
direc="n"
fi
check=" "
validResp=0
while [ $validResp -eq 0 ]; do
read -p "Verify removal of each file? (y/n): " check
for ans in "${resp[@]}"; do
if [ "$check" == "$ans" ]; then validResp=1; fi
done
done
if [ "$check" == "e" ]; then echo "$ac"; return; fi
if [ "$direc" == "n" ]; then
if [ "$check" == "n" ]; then
for file in "$@"; do
if [ ! -d "$file" ]; then command rm -f "$file"; fi
done
else
for file in "$@"; do
if [ ! -d "$file" ]; then command rm -i "$file"; fi
done
fi
else
if [ "$check" == "n" ]; then
command rm -rf "$@"
else
command rm -ir "$@"
fi
fi
fi
}