Snippet Collections

This code checks if `FILE1` and `FILE2` refer to the same file by comparing their inode numbers and device IDs. This is a Bash conditional expression used to test if two files are hard links to the same file. This demonstrates file comparison in Bash.

This code checks if `FILE1` is older than `FILE2` using the `-ot` (older than) test operator in Bash. This demonstrates how to compare the modification times of two files.

This code checks if `FILE1` is newer than `FILE2` using the `-nt` (newer than) test operator in Bash. This is a common way to compare file modification times.

This code demonstrates string comparison in Bash using `==` for equality and `!=` for inequality. It checks if the current user is "foo" or "bar" and prints corresponding messages based on the comparison results. This showcases how to perform conditional checks on strings in Bash.

Replace the prefix `from` with `to` in the value of the variable `FOO`. This demonstrates parameter expansion for string manipulation in Bash.

Replace the suffix `from` with `to` in the value of the variable `FOO`. This demonstrates parameter expansion in Bash for string manipulation.

Replace all occurrences of `from` with `to` in the value of the variable `FOO`. This demonstrates parameter expansion in Bash for string manipulation.

This snippet demonstrates parameter expansion in Bash, specifically replacing the first occurrence of `from` with `to` in the value of the variable `FOO`. This is a basic example of string manipulation using parameter expansion.

Remove the `prefix` from the beginning of the `FOO` variable's value using parameter expansion. This demonstrates how to manipulate strings in Bash by removing a specified prefix.

Remove the longest matching suffix `suffix` from the value of the variable `FOO`. This demonstrates parameter expansion in Bash for string manipulation.

Check if a file named `example.txt` does not exist using the `!` operator to negate the condition. If the file does not exist, print a message indicating its absence; otherwise, print that it exists. This demonstrates how to negate a condition in a Bash script.

Print the value of the `HOME` environment variable, which represents the current user's home directory.

Print the current user's username using the built-in `$USER` variable.

Print all arguments passed to the script using the `$@` built-in variable. This demonstrates accessing all command-line arguments in a Bash script.

This code prints the first and second arguments passed to the script using the built-in variables `$1` and `$2`. This demonstrates accessing command-line arguments in a Bash script.

Print the current Bash process ID using the built-in variable `$BASHPID`.

This code demonstrates the use of the `IFS` (Internal Field Separator) variable in Bash to split a comma-separated string into individual elements. It iterates over each element in the string and prints it as a fruit. This showcases how `IFS` can be used to control how strings are split in loops.

Print the name of the currently executing script using the built-in variable `$0`. This demonstrates accessing the script name in a Bash script.

Print the process ID (PID) of the current script using the `$$` built-in variable. This demonstrates accessing the PID of the running script.

This code attempts to list the contents of a non-existent directory using `ls`. It then checks the exit status of the previous command using the `$?` builtin variable. If the command fails (exit status is not 0), it prints a message indicating the failure along with the exit status. This demonstrates the use of the `$?` variable to check command execution status.