Commands by stanishjohnd

Commands by stanishjohnd (3)

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Random IPv4 address

Show Sample Output
This is sample output - yours may be different.
```
155.83.194.215
```
1

perl -e 'printf join(".", ("%d")x4 ), map {rand 256} 1..4;'

stanishjohnd · 2011-01-16 05:14:20 4
Cleanup firefox's database.

For Mac OS X users only
This is sample output - yours may be different.
1

find ~/Library/Application\ Support/Firefox/ -type f -name "*.sqlite" -exec sqlite3 {} VACUUM \;

stanishjohnd · 2009-09-02 23:12:13 3
Copy via tar pipe while preserving file permissions (cp does not!; run this command with root!)

cp options: -p will preserve the file mode, ownership, and timestamps -r will copy files recursively also, if you want to keep symlinks in addition to the above: use the -a/--archive option
This is sample output - yours may be different.
4

cp -pr olddirectory newdirectory

stanishjohnd · 2009-08-22 22:11:24 8

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Converts all pngs in a folder to webp using all available cores

As an alternative to the above command, this one ditches the unnecessary and complicated for loop in favor of a way faster multi-core approach for a task that's more CPU than I/O intensive, making it a perfect suite for GNU parallel

Install pip with Proxy

Installs pip packages defining a proxy

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Shows what processes need to be restarted after system upgrade

This command can be installed in debian by the package debian-goodies. It also outputs the /etc/init.d/ commands that you need to do.

Detect illegal access to kernel space, potentially useful for Meltdown detection

Based on capsule8 agent examples, not rigorously tested

regex for turning a URL into a real hyperlink (i.e. for posting somewhere that accepts basic html)

This should work with anything://url.whatever etc etc ;)

Tail -f at your own pace

The -s option allows you to specify the update interval

execute a shell with netcat without -e

Shorter version with proper stderr redirection .

Set gnome wallpaper to a random jpg from the specified directory

Every time this is run it will change your background picture. For added fun Add some DBUS magic: . $HOME/.dbus/session-bus/`cat /var/lib/dbus/machine-id`-0 export DBUS_SESSION_BUS_ADDRESS and a crontab entry: */5 * * * * above_command_in_script.sh >/dev/null 2>/dev/null now wallpaper changes every 5 mins

Convert & rename all filenames to lower case

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