UwView is a viewer and search tool for huge text and log files, with a GUI and a command line (uvf) that share one engine.

• Open a file and scroll to the end at once. The file is never loaded into memory; only the visible lines are drawn. Verified up to 258 GB / 4.5 billion lines in a single file.
• uvf searches many files in one run, plain text and seven compressed formats mixed (gz, bz2, xz, lzma, zst, lz4, br), with no external commands. Add -open and the hits appear in the window as file-number:line; double-click to read around a hit.
• Search the text inside Word, Excel and PDF files (.docx, .xlsx, .pdf) too, with uvf or in the window. The text is extracted for reading and searching; the original files are not changed
• Encoding auto-detection (UTF-8, Shift_JIS, EUC-JP, UTF-16), bookmarks remembered per file, keyboard shortcuts, real-time tail.

Setup after install (once)

Use the command as uvf:

 sudo snap alias uwview.uvf uvf

Read files on USB drives and other removable media (/media, /mnt):

 sudo snap connect uwview:removable-media

Check: uvf --version shows the version. Without the alias, run the command as uwview.uvf. To undo the alias: sudo snap unalias uvf.

Examples

 uvf 'logs/**/*.log' ERROR
 uvf 'logs/*.gz' ERROR -open

Quote file patterns so that uvf, not the shell, expands them. uwview opens the GUI.

Where the snap can read

Files in your home folder, and removable media after the connect command above. Files elsewhere, such as /var/log, are not reachable from the snap; copy them under your home folder first.

Free for personal and internal company use under the PolyForm Internal Use License 1.0.0. Source: https://github.com/amru195704/UwView