If you need to create a profile and are already running Firefox, you don't need to close it to do it. Also, if you don't know the exact name of the profile, this would allow you to pick from a list.

Use this command to see logs update in real time

I think this is the cleanest way of getting the current working directory of a script. It also works on osx, Linux, and probably bsd as well..

Probably posted previously, I use this all the time to find and kill a process for "APP". Simply replace "APP" with the name of the process you're looking to kill.

This is like `cd -` but doesn't echo the new directory name, which is preferable (to me) for an alias, e.g.

Be careful when issuing this command, it may kill unwanted processes!

To only search on the process name don't use the argument -f, pkill foo

We normally get tasks in which one has to sort a data file according to some column. For a single file say foo, we would use

sort -k 3 foo >tmp && tmp foo

The for loop is useful when we have to do it on a number of files.

This command deletes all but the first occurrence of a duplicate file in one or more folders.

Consider this file :

laminate

this

file

with awk

hello to

commandlinefu

I can use awk substring to laminate words :

lamin

this

file

with

hello

comma

Similar to http://www.commandlinefu.com/commands/view/2000/laminate-files-line-by-line

2d6 dice:

3 + 6 = 9

Doesn't need to be run as root.

This is one use case of `f`. You need to install `f`(https://github.com/clvv/f) for this to work. With f, you can access any file by only typing some of its name regardless of where you are. f is inspired by autojump and z.

Create a single tar.gz archive

I know it's a very basic one, but it's one I keep forgetting.

Similar output to using MySQL with the \G at the end of a Query. Displays one column per line. Other modes include:

-column

Query results will be displayed in a table like form, using whitespace characters to separate the columns and align the output.

-html Query results will be output as simple HTML tables.

-line Query results will be displayed with one value per line, rows separated by a blank line. Designed to be easily parsed by scripts or other programs

-list Query results will be displayed with the separator (|, by default) character between each field value. The default.

From inside the command line this can be also changed using the mode command:

.mode MODE ?TABLE? Set output mode where MODE is one of:

csv Comma-separated values

column Left-aligned columns. (See .width)

html HTML code

insert SQL insert statements for TABLE

line One value per line

list Values delimited by .separator string

tabs Tab-separated values

tcl TCL list elements