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May 19, 2015 - A Look At The New Commandlinefu
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Commands by d3Xt3r from sorted by
Terminal - Commands by d3Xt3r - 3 results
dd if=/dev/sda bs=1 count=4 skip=$((0x1b8)) 2>/dev/null | hexdump -n4 -e '"0x%x\n"'
2011-07-30 02:42:32
User: d3Xt3r
Functions: dd hexdump
2

Useful when you want to know the mbrid of a device - for the purpose of making it bootable. Certain hybridiso distros, for eg the OpenSUSE live ISO uses the mbrid to find the live media. Use this command to find out the mbrid of your USB drive and then edit the /grub/mbrid file to match it.

wget --spider $URL 2>&1 | awk '/Length/ {print $2}'
2011-07-03 00:14:58
User: d3Xt3r
Functions: awk wget
5

- Where $URL is the URL of the file.

- Replace the $2 by $3 at the end to get a human-readable size.

Credits to svanberg @ ArchLinux forums for original idea.

Edit: Replaced command with better version by FRUiT. (removed unnecessary grep)

curl -Is google.com | grep Date
2011-06-24 11:19:47
User: d3Xt3r
Functions: grep
Tags: http date time
2

This command will show the current GMT time using HTTP. This might be useful if you just want to know what's the current human-readable and accurate-enough time, without changing the system time, using a simple command that would work regardless of the availability of NTP.

Note: To get a quicker and more accurate response, replace google.com with your local NTP server.

Also can be used as an alternative to the "htpdate" program:

http://www.commandlinefu.com/commands/view/668/set-your-computers-clock-using-http-and-htp-http-time-protocol-when-ntpsntp-is-not-available