Commands by viner (3)

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Nicely display permissions in octal format with filename
Nicely display permissions in octal format and filename for a given directory

Remove security limitations from PDF documents using ghostscript (for Windows)
#4345 also works under windows

Read aloud a text file in Ubuntu (and other Unixes with espeak installed

Show drive names next to their full serial number (and disk info)
As of this writing, this requires a fairly recent version of util-linux, but is much simpler than the previous alternatives. Basically, lsblk gives a nice, human readable interface to all the blkid stuff. (Of course, I wouldn't recommend this if you're going to be parsing the output.) This command takes all the fun out of the previous nifty pipelines, but I felt I ought to at least mention it as an alternative since it is the most practical.

du command without showing other mounted file systems

convert unixtime to human-readable with awk
- convert unixtime to human-readable with awk - useful to read logfiles with unix-timestamps, f.e. squid-log: sudo tail -f /var/log/squid3/access.log | awk '{ print strftime("%c ", $1) $0; }

Preserve colors when piping tree to less

Get size of terminal
See the cols and lines and make sure the console it correctly configured for the screen size.

Capture data in ASCII. 1500 bytes
Sniffing traffic on port 80 only the first 1500 bytes

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"


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