Shell script Programming Pass parameters

Positional parameter variables

myscript.sh ARGU1 ARGU2

Citation method:

$, $, ..., ${10}, ${11}, ...

When executing scripts on Linux, place the parameters behind the script (myscript.sh argu1 argu2), $n represent the parameters to be executed

Exercise: Write a script, through the command to pass two text file path to the script, calculate the sum of its blank line number;

#!/bin/bash#file1_lines=$ (grep "^$" $ | wc-l) file2_lines=$ (grep "^$" $ | wc-l) echo "Total Blank lines: $[$file 1_lines+ $file 2_lines] "Execute chmod +x myscript.sh./myscript.sh/etc/inittab/etc/passwd

This article is from the "Wang Liming" blog, make sure to keep this source http://afterdawn.blog.51cto.com/7503144/1915969

Shell script Programming Pass parameters