Take an address, get the GPS Coordinates from Google
$ addrcoords '123 Main St, Springfield, ST 01023'
{
"lat": 64.121415,
"lng": -101.125193
}
Generate all anagrams of a string:
$ anagrams doe
doe
deo
ode
oed
edo
eod
Really interesting uses of this script would be to combine it with a dictionary of words and only select those anagrams that are words.
For example, Mac OS X has a dictionary /usr/share/dict/words
So we could filter out only those anagrams that are in the dictionary like so:
$ anagrams doe | for perm in $(cat -); do grep -i "^$perm$" /usr/share/dict/words; done
doe
ode
Edo
ActiveRecord graph: makes a GraphViz digraph that shows all the belongs_to associations in a rails app
Suppose you have the discourse rails app checked out, and you want to find out how some of it's models are interrelated:
$ cd discourse
$ argraph Post Topic Category PostReply User UserAction UserHistory QuotedPost View UserAvatar
digraph {
Post -> User
Post -> Topic
Topic -> Category
Topic -> User
Category -> Topic
Category -> User
PostReply -> Post
UserAction -> User
QuotedPost -> Post
QuotedPost -> QuotedPost
View -> User
UserAvatar -> User
}
$ !! | dot -Tpng > discourse.png
The output of argraph is a digraph in the DOT language, which can be rendered as an image using GraphViz.
The nodes are ActiveRecord models, and the edges represent the 'belongs to' relation.
The above graph renders as:
Returns percentage of battery left (Mac OS X)
Days since last merge commit.
$ days_since
480 days since Tobi Lehman merged without rebasing
Enables quick SQL queries against Rails apps using MySQL or PostgreSQL. Note: I used DECIMAL since CAST(version AS DECIMAL) works in both MySQL and PostgreSQL.
Shows current point in rails migration 'timeline'
Log state changes for adjustible-height desks
TODO: Implement height control, so that changing the state of the desk and logging are both automated.
Plots two-dimensional dataset in GNUplot (thanks to @jeroenjanssens)
Opens a file in a running Emacs process ;(server-start)
Extract year from DateTimeOriginal in EXIF metadata
Example:
$ exifyear img_204.jpg
2011
rake routes can take a long time to run, I'm measuring about 7 seconds, that's enough time to want to leave and slack off. Unacceptable.
fastroutes caches output of config/routes.rb for rails applications. To avoid going stale, the md5 hash of config/routes.rb is in the filename under tmp/.
This means that you only ever run rake routes once after each time routes.rb has changed, then each subsequent time, you pull from "tmp/cached_routes_$(md5 config/routes.rb).txt"
Formats a number using commas:
$ fmtnum 1000000000000000000
1,000,000,000,000,000,000
After analyzing my bash history I found it would be worthwhile to write this script, so that commonly mis-typed commands like gi ts and gi tb work as intented.
Git branch quick
Git grep and git blame, together at last.
Step through git diffs, one commit at a time. Hit 'q' to step to previous commit, or 'Ctrl-C' to exit.
HTTP Status Code lookup:
$ hc 20
200 OK
201 Created
202 Accepted
203 Non-Authoritative Information (since HTTP/1.1)
204 No Content
205 Reset Content
206 Partial Content
207 Multi-Status (WebDAV; RFC 4918)
208 Already Reported (WebDAV; RFC 5842)
420 Enhance Your Calm (Twitter)
$ hc 418
418 I'm a teapot (RFC 2324)
Gets only the headers of the HTTP response
$ headers tblh.mn/42
HTTP/1.1 301 Moved Permanently
Date: Thu, 23 Apr 2015 22:09:38 GMT
Server: Apache
Location: https://tobilehman.com/tblhmn/42
Content-Length: 297
Content-Type: text/html; charset=iso-8859-1
Find external IP address and log with timestamp.
Show status of all Jenkins jobs at command line
(Mac OS X 10.9+ only) Find files under ~ that have a given tag.
ccTLD lookup:
$ tld ke
.ke Kenya
Extract TODO messages from list of files on stdin
$ git ls-files | todo
TODO messages from list of files on stdin
todo messages
todo .*)$/i && print "\t$1\n"' < $line
TODO implement method to derive stop ID from text alias
Wraps each line in stdin with single quotes.
Convert ASCII/UTF-8 hexstrings to readble format:
$ hexchr 68656c6c6f20776f726c640a
hello world
Quick histogram display, command line only (thanks to @bitly)
Generate a complete graph in GraphViz format:
$ kg 5
graph k5 {
2 -- 1
3 -- 1
3 -- 2
4 -- 1
4 -- 2
4 -- 3
5 -- 1
5 -- 2
5 -- 3
5 -- 4
}
To prepare, run clang -framework Foundation maclock.m -o maclock
Locks a machine running Mac OS X (works with Knock)
Print out directories in PATH, one per line
Pairwise diffs of a stream of integers:
$ seq 10 | pwdiffs
1
1
1
1
1
1
1
1
1
Show ids of all detached screen sessions:
Examples:
$ screen -ls
There are screens on:
46784.ttys006.manifold (Detached)
47401.ttys006.manifold (Detached)
2 Sockets in /var/folders/3_/j4m3c1x500773nrb6xxh8ggh0000gn/T/.screen.
$ screens
4678
4740
Shuffle lines from standard in randomly:
tlehman@hausdorff:~/bin(master+)% ls | shuffle | head
dbtt*
wrap*
websocketd*
desk*
edit*
ipaddrs*
anagrams*
vs*
decommonize*
count_lines_by_lang*
Convert string of any form into snake_case_form
Examples:
$ echo 'Economic Possibilities for
our Grandchildren' | snake_case
economic_possibilities_for_our_grandchildren
$ echo ObjectOrientedProgrammingForSickCats | snake_case
object_oriented_programming_for_sick_cats
Transpose a file delimited by whitespace
Open in MacVim after fuzzy search with selecta