方法有三種：
1 使用source
2 使用 .
3 使用sh
簡單實驗：
first.sh
#!/bin/bash
echo 'your are in first file'
second.sh
#!/bin/bash
echo 'your are in second file'
source first.sh // . first.sh // sh first.sh
執行結果：
your are in second file
your are in first file
現在討論關於參數傳遞：
first.sh
#!/bin/bash
echo 'your are in first file'
echo "${0} ${1}"
second.sh
#!/bin/bash
echo 'your are in second file'
echo "${0} ${1}"
. first.sh ${2} //source first.sh
執行：./second.sh abc 123
your are in second file
./second.sh abc
your are in first file
./second.sh 123
改變second.sh
second.sh
#!/bin/bash
echo 'your are in second file'
echo "${0} ${1}"
sh first.sh ${2}
執行：
./second.sh abc 123
結果：
your are in second file
./second.sh abc
your are in first file
first.sh 123
所以在調用的那個腳本需要傳遞參數的時候還是要注意選對方法的