How to install Tweak Tool on Ubuntu 20.04 LTS Focal Fossa Linux. Linux IP forwarding – How to Disable/Enable. How to use bash array in a shell script. AMD Radeon Ubuntu 20.04 Driver Installation. How to install missing ifconfig command on Debian Linux. Ubuntu 20.04 Remote Desktop Access from Windows 10. How to find my IP address on Ubuntu 20.04 Focal Fossa Linux. How to install the NVIDIA drivers on Ubuntu 20.04 Focal Fossa Linux. Note that using the & operator will also require you to use double brackets ]. What if we want to check whether or not multiple directories exist? In that case, it is useful to string together multiple if conditions with & operators or -a as seen below. We can also check to see if a directory does not exist, by using the ! operator – which is used to negate expressions in Bash. Note that you can also use double brackers ] in either of the previous examples. $ DIR=/tmp/downloads & echo "$DIR directory exists." & echo "$DIR directory exists."Ī command line one-liner would look like this: The next method is a little more succinct, and easier to use on the command line. Note that if $DIR happens to be a file, the script will still say that the directory does not exist. The first method is by using single brackets and the -d operator in your if statement, like in the below script:. There are multiple ways to check if a directory exists, see the methods below: $ – requires given linux commands to be executed as a regular non-privileged user # – requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command 
Privileged access to your Linux system as root or via the sudo command.
Requirements, Conventions or Software Version Used
How to check if a directory exists from Bash scriptīash Scripting: Check if directory exists Software Requirements and Linux Command Line Conventions Category. How to check if a directory exists in Bash script. In this tutorial, you will see how to check if a directory exists in Bash on Linux systems. 
This functionality can be written into a Bash script or used directly from the command line, without writing a script for it. Based on the result, your Bash script can proceed with the appropriate action. When writing a Bash script, it is common that you’ll run into the need to check for the existence of a directory.
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