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Exactly the same number of characters, exactly the same results, but with bc
This command prints the Date (Not time) from 3 days ago (72 hours ago).
This works on systems without GNU date (MacOSX , Solaris, FreeBSD).
In a folder with many files and folders, you want to move all files where the date is >= the file olderFilesNameToMove and
Change HH:MM with your target time.
This is for a Debian/Ubuntu GNU system. You need bash (package bash), date (package coreutils) and toilet (package toilet). Install with:
# apt-get install bash coreutils toilet toilet-fonts
Uses date to grep de logfile for today and uses it to get the last hour logs. Can be used to get last minute logs or today's logs.
More recent versions of the date command finally have the ability to decode the unix epoch time into a human readable date. This function makes it simple to utilize this feature quickly.
If you have used bash for any scripting, you've used the date command alot. It's perfect for using as a way to create filename's dynamically within aliases,functions, and commands like below.. This is actually an update to my first alias, since a few commenters (below) had good observations on what was wrong with my first command.
# creating a date-based ssh-key for askapache.github.com
ssh-keygen -f ~/.ssh/`date +git-$USER@$HOSTNAME-%m-%d-%g` -C 'webmaster@askapache.com'
# /home/gpl/.ssh/git-gplnet@askapache.github.com-04-22-10
# create a tar+gzip backup of the current directory
tar -czf $(date +$HOME/.backups/%m-%d-%g-%R-`sed -u 's/\//#/g' <<< $PWD`.tgz) .
# tar -czf /home/gpl/.backups/04-22-10-01:13-#home#gpl#.rr#src.tgz .
I personally find myself having to reference
date --help
quite a bit as a result. So this nice alias saves me a lot of time. This is one bdash mofo. Works in sh and bash (posix), but will likely need to be changed for other shells due to the parameter substitution going on.. Just extend the sed command, I prefer sed to pretty much everything anyways.. but it's always preferable to put in the extra effort to go for as much builtin use as you can. Otherwise it's not a top one-liner, it's a lazyboy recliner.
Here's the old version:
alias dateh='date --help|sed "/^ *%%/,/^ *%Z/!d;s/ \+/ /g"|while read l;do date "+ %${l/% */}_${l/% */}_${l#* }";done|column -s_ -t'
This trick from my [ http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html bash_profile ]
A command to find out what the day ends in. Can be edited slightly to find out what "any" output ends in.
NB: I haven't tested with weird and wonderful output.
The shell has perfectly adequate pattern matching for simple expressions.
For those days when you need to know if something is happening because the day ends in "y".
Will edit *.db files in the same directory with todays date. Useful for doing a mass update to domains on a nameserver, adding spf records, etc.
Looks for a string starting with 200 or 201 followed by 7 numbers, and replaces with todays date. This won't overwrite Ip's but i would still do some double checking after running this.
Make sure your server's date is correct, otherwise insert your own serial number.
rndc reload
should usually follow this command.
This produces a parseable output of the last day of the month in future or past. Change the '-v-0m' to be a month plus or minus from the current system time.
Good when firewalled and only in need of a reasonable accurate time.
Use a fast responding web server.
That works in all softs, CLI or GUI... I don't want to waste time to all the time typing the same stuff . So, I have that command in my window manager shortcuts ( meta+l ). All the window managers have editable shortcuts AFAIK. If not, or you don't want to use it that way, you can easily use the xbindkeys soft.
I you're using kde4, you can run :
systemsettings
then open "inputs actions" and create a new shortcut.
For Gnome take a look there : http://www.cyberciti.biz/faq/howto-create-keyboard-shortcuts-in-gnome/
A more advanced one, with strings and newlines :
xvkbd -xsendevent -text "---8<-----\nToday date is: $(date +%Y%m%d)\n---8<-----"
For complicated or long paste, you can feed xvkbd with a file :
xvkbd -xsendevent -file <file>
You can simulate ^C ( control+c ) too or others combinations of keys :
xvkbd -text "\C\Ac"
There's no man page nor help ( On my Archlinux distro ), but you can see online doc there : http://homepage3.nifty.com/tsato/xvkbd/
Requires the date command. This also works with some other comics. Here's a bash script that displays daily Garfield, Id, and Andy Capp:
http://putnamhill.net/cgi-bin/yahoo-comics.sh?ga,crwiz,crcap