Bash is a Unix shell and command language for automating operating-system tasks. In systems administration, it can replace repetitive logins with one repeatable script that checks multiple Linux servers. section 9.3
A typical workflow reads server names or addresses from a file, connects with SSH key pairs, runs uname -r, compares each result with an expected kernel version, and records whether it is lower, equal, or higher. section 9.3
Kernel-version check
Set EXPECTED_KERNEL_VERSION, provide servers.txt, and run a script that writes results to kernel_check_results.txt. The same pattern can be adapted for package updates, disk-usage monitoring, or system-performance checks. section 9.3
