Linux Shell编程之三函数
#!/bin/bash# description: 将一个外部命令本身和它所依赖的库文件拷贝到指定路径下
# version:0.0
# date:2014-07-23
# author: Alex
# license: GPL
# 模拟根文件系统
ch_root="/mnt/sysroot"
[ ! -d $ch_root ] && mkdir $ch_root
bincopy() {
if which $1 &>/dev/null; then
# local 定义局部变量，它的作用域是本个函数，一般我们在这里尽量使用局部变量，而不使用全局变量
local cmd_path=`which --skip-alias $1`
local bin_dir=`dirname $cmd_path`
[ -d ${ch_root}${bin_dir} ] || mkdir -p ${ch_root}${bin_dir}
[ -f ${ch_root}${cmd_path} ] || cp $cmd_path ${ch_root}${bin_dir}
# 用 return 返回函数的状态值 是一个数字 0-255
return 0
else
echo "Command not found."
return 1
fi
}
libcopy() {
local lib_list=$(ldd `which --skip-alias $1` | grep -Eo '/[^[:space:]]+')
for loop in $lib_list;do
local lib_dir=`dirname $loop`
[ -d ${ch_root}${lib_dir} ] || mkdir -p${ch_root}${lib_dir}
[ -f ${ch_root}${loop} ] || cp $loop ${ch_root}${lib_dir}
done
}
read -p "Please input a command: " command
while [ "$command" != "quit" ];do
if bincopy $command ;then
libcopy $command
fi
read -p "Please input a command: " command
done
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