Linux Shell Scripting: In 8 Hours, For Beginners, Learn Coding Fast! Linux Programming Language Crash Course, A QuickStart Tutorial Book by Script Example, In Easy Steps! An Ultimate Beginner's Guide by Yao Ray

Author:Yao, Ray [Yao, Ray]
Language: eng
Format: mobi, epub
Publisher: Linux Shell Scripting bootcamp cookbook bash tutorial for linux and unix beginners book teach yourself
Published: 2019-08-28T16:00:00+00:00

-b file

If the object is a block device file, return true.

-c file

If the object is a character device file, return true.

Example 5.2

# Assume that the file “myFile . sh” does not exist, but we still check the property of this file.

#!/bin/bash

file="/root/myFile.sh"

if [ -r $file ] # check if the object is readable

then

echo "The object is readable"

else

echo "The object isn't readable"

fi

if [ -w $file ] # check if the object is writable

then

echo "The object is writable"

else

echo "The object isn't writable"

fi

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