caseinsensitive matching

Q1: What is the purpose of case-insensitive matching in Bash? A1: Case-insensitive matching provides flexibility in how strings are compared or manipulated by ignoring the differences in uppercase and lowercase letters. This can be immensely useful while scripting, as it allows the script to handle user input or file names in a more robust manner without being affected by the case used. Q2: How can we perform case-insensitive operations on variables in Bash? A2: In bash, to perform case-insensitive operations on variables, you can utilize ${var^^} or ${var,,} for case transformation, along with enabling the 'nocasematch' option via the shopt -s nocasematch bash builtin command.