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Using Arrays in Batch Files

Amendment to these instructions: add space as a delimiter or else you'll end up with stray spaces on the end of the array locations and/or values.

My solution:

set __MONTH.01=Jan
set __MONTH.02=Feb
set __MONTH.03=Mar
set __MONTH.04=Apr
set __MONTH.05=May
set __MONTH.06=Jun
set __MONTH.07=Jul
set __MONTH.08=Aug
set __MONTH.09=Sep
set __MONTH.10=Oct
set __MONTH.11=Nov
set __MONTH.12=Dec

REM See also:
REM http://ings.ca/jim/2008/02/10/adding-timestamps-in-a-dos-batch-file/
set cur_yyyy=%date:~10,4%
set cur_mm=%date:~4,2%

for /f "tokens=2* delims=.= " %%a in ('set __MONTH.') do (
if %%a == %cur_mm% set cur_mmm=%%b
)

set monthfolder="%cur_yyyy%-%cur_mm% (%cur_mmm%)"
if not exist %monthfolder% mkdir %monthfolder%

array programming batch dos batchprogramming scripting solution
2 days ago

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Batch -change month # to letters

First off, you can save yourself all those for statements. Since NT has a built-in DATE var, you can simply use substrings to get the parts you need.
In my case the DATE var is:
Sat 29-04-2006
so doing this:
set YYYYMMDD=%date:~10,4%%date:~7,2%%date:~4,2%
will set a new var called YYYYMMDD
BTW, it's not usually a good idea to alter a built-in var, like DATE.
Moving right along, I guess the simplest way to change 'numeric' month to 'named' month is with a chunk of code like this:
#####
if %MM%==01 set MM=Jan
if %MM%==02 set MM=Feb
if %MM%==03 set MM=Mar
if %MM%==04 set MM=Apr
and so on
#####

My solution:

set __MONTH.01=Jan
set __MONTH.02=Feb
set __MONTH.03=Mar
set __MONTH.04=Apr
set __MONTH.05=May
set __MONTH.06=Jun
set __MONTH.07=Jul
set __MONTH.08=Aug
set __MONTH.09=Sep
set __MONTH.10=Oct
set __MONTH.11=Nov
set __MONTH.12=Dec

REM See also:
REM http://ings.ca/jim/2008/02/10/adding-timestamps-in-a-dos-batch-file/
set cur_yyyy=%date:~10,4%
set cur_mm=%date:~4,2%

for /f "tokens=2* delims=.= " %%a in ('set __MONTH.') do (
if %%a == %cur_mm% set cur_mmm=%%b
)

set monthfolder="%cur_yyyy%-%cur_mm% (%cur_mmm%)"
if not exist %monthfolder% mkdir %monthfolder%

batchfile batchprogramming dos datetime scripting tipsandtricks dammitbrain sysadmin batch programming reference solution
2 days ago

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amd graphics - WebGL on Google Chrome with AMD card - Ask Ubuntu

Even though WebGL is closest to OpenGL ES v2, every WebGL implementation that I know, including ours, supports desktop OpenGL too, but you need at least OpenGL 2.1 because WebGL is entirely based on the programmable pipeline. So indeed, OpenGL 1.5 is not good enough.

firefox opengl tilt inspector webdevel solution ubuntu lucid
5 days ago

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Frequent head unloads info

Disabling APM entirely (hdparm -B255 /dev/sda) is not the most elegant solution (still need a script to do this on startup and resume from suspend/hibernate), but it does stop the load/unloads immediately. (And possibly reduces time on battery in the process.)

thinkpad solution hardware harddiskdrive powermanagement
6 days ago

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