Use the which command to check if the specified bash command exists.Use which Command 1 2 3 4 5 6 7 if which wget > /dev/null; then echo "wget command exists." else echo "wget command does not exist." fioutput 1 2 3 wget command exists...
if!type"$foobar_command_name"> /dev/null;then# install foobar here,or poping up some warning messagesfi references: http://stackoverflow.com/questions/7522712/how-to-check-if-command-exists-in-a-shell-script http://stackoverflow.com/questions/592620/how-to-check-if-a-program-exists-from-a...
We will be discussing the following methods to check if a file or directory exist or not:the test command to check if a file exists short version of test command advanced if…else one-liners test command to check if directory exists the test command to check multiple files test command ...
Check if a File or Directory Exists Using Code Snippets The previous commands work well for a simple two-line command at a command prompt. However, you can also useBashwith multiple commands. When several commands are strung together, they are called ascript. Ascriptis usually saved as a fil...
You can access it wherever on the system! You can even pull out your script and check if your file exists or not. Done! No need to keep opening your test command. Final Words Today, you learned how to check and test if your file exists or not on your Bash!
After running this updated code, we have got the very same result i.e. file exists. The output of the below-stated command is attached in the image. $bashdirec.sh Example 02: Check If Directory Exists Let’s take a look at the code that is used to check if the directory of the fo...
Catkin tools installed successfully."fi}create_catkin_ws(){# Checkifworkspace existsif[ -e"$CATKIN_DIR/.catkin_workspace"] || [ -d"$CATKIN_DIR/.catkin_tools"]; thenecho"Catkin workspace detected at ~/catkin_ws"elseecho"Creating catkin workspace ...
if[ -e"${HOME}/.fvwmrc"];then# test to see if ~/.fvwmrc exists echo"you have a .fvwmrc file" if[ -L"${HOME}/.fvwmrc"];then# is it a symlink ? echo"it's a symbolic link elif[ -f"${HOME}/.fvwmrc"];then# is it a regular file ?
Method 1: Theif [ -d $directory ]Command ([Operator) Theif [ -d $directory ]command can be used to check for the existence of a directory. If the specified directory exists, the command will return an exit status of0(true). If the directory does not exist, the command will return ...
Example 2: Check the Existence of the File Using the -F Operator with Double Third Brackets ([[ ]]) Create a Bash file with the following script that takes the filename as a command-line argument and check whether the file exists in the current location or not using the -f operator in...