I'd like to rearrange the content of a file on a per line basis (see below), ideally without using Perl or Python (I'm not allowed to... Don't ask.) The input file contains unordered header lines and lines with backup operation results. The output files should contain the lines ordered as shown below. Original file: Completed Backups Backups with Warnings Failed Backups Server A backup was completed with warnings Server B backup was successful Server C backup failed Server D backup was completed with warnings End result: Completed Backups Server B backup was successful Backups with Warnings Server A backup was completed with warnings Server D backup was completed with warnings Failed Backups Server C backup failed