File That Exists On Macos For Test

Mar 18, 2018 How to check if directory exists or not? To check directory existence we will again use stat structure.sys/stat.h header file defines a macro SISDIR, used to check directory existence.The macro accepts stat.stmode param and returns a non-zero integer if given file is a directory, otherwise zero. Program to check directory existence. This is the sixth part in my ongoing series on using SaltStack to deploy Consul and Prometheus Exporters, enabling Prometheus to discover machines and services to monitor. You can view the other posts in the series below: - Part 1 - Linux Part 2 - Windows Part 3 - OpenBSD Part 4 - FreeBSD Part 5 - illumos All of the states are available in my Salt Lab repository. Oct 08, 2019 Apple cannot test every application available for a platform as open as macOS (the walled garden of iOS and routing everything through the App Store is a slightly different ballgame), but it.

How do I check if a file is empty or not using bash or ksh shell script under a UNIX / Linux / macOS / OS X / BSD family of operating systems? How do I check if a file is empty in Bash?
You can use the find command and other options as follows. The -s option to the test builtin check to see if FILE exists and has a size greater than zero. It returns true and false values to indicate that file is empty or has some data. This page shows how to check if a file is empty in Bash shell running on a Linux or Unix-like operating systems.

Check If File Is Empty Or Not Using Shell Script

The syntax is as follows:

Sample outputs:

Now create another file with some data in it:

You should not see any output from the find command.

Bash Script – Check If File is Empty or Not With the -s Option

However, one can pass the -s option as follows in script or shell prompt:

Sample outputs:

The non zero output indicate that file is empty.

Sample outputs:

The zero output indicate that file is not empty. So you can write a shell script as follows.

Shell Script To Check If File Is Empty OR Not

Run it as follows:
chmod +x script.sh ./script.sh /etc/resolv.conf
Sample outputs:

Run it on an empty file:
touch /tmp/test.txt ./script.sh /tmp/test.txt
Sample outputs: