Programmer and Web Pentester.
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Search files and folders with find, build safe bulk actions with xargs, edit text in place with sed, and slice or summarize data with awk. Includes mass rename, project wide search and replace, CSV summaries, and safety tips.
Search and shape text at the command line using grep for matching, cut for field extraction, sort and uniq for counting and ranking, wc for quick totals, and tee for logging and branching pipelines. Includes regex basics and practical log examples.
Discover storage devices, partitions, and filesystems. Learn lsblk, mount and umount, persistent mounts with /etc/fstab, labels and UUIDs, space checks with df and du, and a safe hands-on flow to add a new disk in a VM. Includes a quick swapfile recipe and basic checks.
