Identifier / Programs / Linux and Unix
look
Display lines beginning with a prefix in a sorted file. tldr-pages
GTFOBins file-read 1 documented command
How look is abused
file-read
Each abuse is GTFOBins's category and the options and words it uses; the full write-up is on GTFOBins's page for look.
1 documented command
file-read unprivileged, with sudo, as SUID
look '' /path/to/input-fileThe command the identifier reads trips no Sigma process-creation rule. This command is from GTFOBins, at commit acd524623f9c of 2026-05-27, under the GPL-3.0, with no warranty. Changed: Markdown is shown formatted. The source is in lolbas-gtfobins-commands.json.gz, and the full entry is on GTFOBins’s page for look. The identifier reads the line that runs look.
Everyday use
Search for lines beginning with a specific prefix in a specific file
look prefix path/to/fileIdentifyCase-insensitively search only on alphanumeric characters
look --ignore-case --alphanum prefix path/to/fileIdentifySpecify a string termination character (space by default)
look --terminate ,IdentifyNone of the 3 examples the identifier reads matches GTFOBins abuse or trips a Sigma process-creation rule.