I get how to read one file by using [-r] But how do I make a script that takes a multiple input of files and checks?
Lets say I type
./checkfile hi hello world the script should return :
hi is readable hello is readable world is not readable summary: 2 of 3 files are readable 
#! /bin/sh - n=0 for file do if [ -r "$file" ]; then printf '"%s" is readable\n' "$file" n=$((n + 1)) else printf '"%s" is not readable\n' "$file" fi done echo "$n out of $# files were readable" [ -r file ] test whether the file is readable by the process invoking that [ command, so by you, the user running that script, typically using the access() system call.
It doesn't say anything about whether other users may be able to read it. It doesn't attempt to read it either. For instance, it won't be able to detect files that are un-readable because the underlying storage is defective.
shebang doesn't seem right #! /bin/sh would be incorrect. $@ is a special variable that stores all arguments (positional parameters) passed to the script in and array-like struct.
$1, $2, $3, ... are the positional parameters. "$@" is an array-like construct of all positional parameters, {$1, $2, $3 ...}. More about this in the bash reference manual
