test command HowTo - Linux / Unix Q & A from nixCraft

HowTo: Check If a Directory Exists In a Shell Script

last updated May 2, 2017 in BASH Shell, CentOS, Debian / Ubuntu, FreeBSD, KSH Shell, Linux, Suse, UNIX

How do I check if a directory exists in a shell script under Linux or Unix like operating systems? How can I check if a directory exists in a shell script on Unix-like system?

Bash Shell Number Comparison

last updated January 29, 2014 in BASH Shell, Linux, UNIX

I am new Unix/Linux user. I am learning shell scripting. How can I compare numbers in bash shell?

Bash Shell: Check File Exists or Not

last updated April 20, 2012 in BASH Shell

How do I test existence of a text file in bash running under Unix like operating systems?

Bourne Shell Exit Status Examples For Linux and Unix

last updated December 4, 2018 in BASH Shell, Linux, UNIX

Can you explains and provide us “Bourne Shell Exit Status Code” examples?

Explain Usage Of The Linux Left Bracket /usr/bin/[ Command

last updated November 23, 2018 in BASH Shell, FreeBSD, Linux, UNIX

I see [ command in /usr/bin directory. What is the /usr/bin/[ command used for?

BASH Shell: Test If a File Is Writable or Not

last updated December 12, 2008 in AIX, BASH Shell, CentOS, Debian / Ubuntu, Fedora Linux, FreeBSD, HP-UX Unix, Linux, OpenBSD, Solaris-Unix, Suse, Ubuntu Linux, UNIX

Q. How can you test if a file is writable under UNIX / Linux bash shell scripting?

Linux Bash Script Check File Existence

last updated August 14, 2009 in BASH Shell, CentOS, Debian / Ubuntu, FAQ, FreeBSD, Linux, RedHat and Friends, Suse, Ubuntu Linux, UNIX

How do I check if a file called /tmp/foo.txt exists or not using a shell script under Linux operating systems?