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This modifies the output of ls so that the file size has commas every three digits. It makes room for the commas by destructively eating any characters to the left of the size, which is probably okay since that's just the "group".
Note that I did not write this, I merely cleaned it up and shortened it with extended regular expressions. The original shell script, entitled "sl", came with this description:
: For tired eyes (sigh), do an ls -lF plus whatever other flags you give
: but expand the file size with commas every 3 digits. Really helps me
: distinguish megabytes from hundreds of kbytes...
: Corey Satten, email@example.com, 11/8/89
Of course, some may suggest that fancy new "human friendly" options, like "ls -Shrl", have made Corey's script obsolete. They are probably right. Yet, at times, still I find it handy. The new-fangled "human-readable" numbers can be annoying when I have to glance at the letter at the end to figure out what order of magnitude is even being talked about. (There's a big difference between 386M and 386P!). But with this nifty script, the number itself acts like a histogram, a quick visual indicator of "bigness" for tired eyes. :-)
This is the most straightforward approach: first regexp limits dictionary file to words with thirteen or more characters, second regexp discards any words that have a letter repeated. (Bonus challenge: Try doing it in a single regexp!)
It looks like this "feature" let us to "eval" and "bind" a lexical env at subshell start.
For sure, it could have some 'legal' use ...
Useful, when you need to backup/copy/sync a folder over ssh with a non standard port number
capture 2000 packets and print the top 10 talkers
This does not require you to know the partition offset, kpartx will find all partitions in the image and create loopback devices for them automatically. This works for all types of images (dd of hard drives, img, etc) not just vmkd. You can also activate LVM volumes in the image by running
vgchange -a y
and then you can mount the LV inside the image.
To unmount the image, umount the partition/LV, deactivate the VG for the image
vgchange -a n <volume_group>
kpartx -dv <image-flad.vmdk>
to remove the partition mappings.
When booting a VM through OpenStack and managed through cloudinit, the hosts file gets to write a line simiar to
127.0.1.1 ns0.novalocal ns0
This command proven useful while installing a configuration manager such as Salt Stack (or Puppet, or Ansible) and getting node name
I used this (along with a modified one replacing `mkv` with `srt`) to remove the slight differences in who the provider of the video / matching subtitle was (as they are the same contents and the subs match anyway).
So now VLC (and other video players) can easily guess the subtitle file.
A nice way to interrupt a sleep with a signal.
This commands compresses the "tmp" directory into an initrd file.
this command extracts an initrd files into the "tmp" directory
this command can be added to crontab so as to execute a nightly backup of directories and store only the 10 last backup files.
Mac have direct conversion of seconds (Epoch time)
credit shall fall to this for non-gzipped version:
Its possible to user a simple regex to extract de username from the finger command.
The final echo its optional, just for remove the initial space
Creates a 2 second video clip from an image.
Caution: distructive overwrite of filenames
Useful for concatenating pdfs in date order using pdftk
Works great on Mac OSX.
Reduced to only one command. :)
Autocomplete from .ssh/config