Hi everyone,

I am new to scripting world and i have been assigned the task of converting some bat scripts to sh scripts because we migrate from Windows to Linux server.I would be really really thankful if you could convert this bat script to sh script.

Please find below the .bat script.

rem *************************************************************************************
rem This script is used to get r2devices files.
rem
*************************************************************************************
ECHO OFF
E:
dir >>r2_test.txt
cd \Informatica\infa_shared\SrcFiles\IT_REPORTING\RISH
date/T>r2devices.log.
time/T>>r2devices.log.
del r2devices_delta.csv
SET CURRDATE=%DATE%

SET PARSEARG="eol=; tokens=1,2,3,4* delims=/,. "
FOR /F %PARSEARG% %%h IN ("%CURRDATE%") DO (
SET GYear=%%k
SET GDay=%%j
SET GMonth=%%i
SET GWeekDay=%%h
)
CALL :JDate %GYear% %GMonth% %GDay%
SET /A NewJDate = %JDate% - 1
CALL :GDate %NewJDate%
echo r2devices.%GYear%.%GMonth%.%GDay%.csv to download >>r2devices.log.
echo open edm01 >get_r2devices.ftp
echo user rca Pu2 >>get_r2devices.ftp
echo ascii >>get_r2devices.ftp
echo lcd >>get_r2devices.ftp
echo prompt >>get_r2devices.ftp
echo pwd >>get_r2devices.ftp
echo ls -l >>get_r2devices.ftp
echo get r2devices.%GYear%.%GMonth%.%GDay%.csv >>get_r2devices.ftp
echo bye >>get_r2devices.ftp
ftp -n -s:get_r2devices.ftp >> r2devices.log
ren r2devices.%GYear%.%GMonth%.%GDay%.csv r2devices_delta.csv >> r2devices.log
del *.ftp
exit 0

::===================================::
:: ::
:: - S u b r o u t i n e s - ::
:: ::
::===================================::


:GDate
:: Convert Julian date back to "normal" Gregorian date
:: Argument : Julian date
:: Returns : YYYY MM DD

::
SET /A P = %1 + 68569
SET /A Q = 4 * %P% / 146097
SET /A R = %P% - ( 146097 * %Q% +3 ) / 4
SET /A S = 4000 * ( %R% + 1 ) / 1461001
SET /A T = %R% - 1461 * %S% / 4 + 31
SET /A U = 80 * %T% / 2447
SET /A V = %U% / 11
SET /A GYear = 100 * ( %Q% - 49 ) + %S% + %V%
SET /A GMonth = %U% + 2 - 12 * %V%
SET /A GDay = %T% - 2447 * %U% / 80
:: Clean up the mess
FOR %%A IN (P Q R S T U V) DO SET %%A=
:: Add leading zeroes
IF 1%GMonth% LSS 20 SET GMonth=0%GMonth%
IF 1%GDay% LSS 20 SET GDay=0%GDay%
:: Return value
SET GDate=%GYear% %GMonth% %GDay%
GOTO:EOF

:JDate
:: Convert date to Julian
:: Arguments : YYYY MM DD
:: Returns : Julian date
::
:: First strip leading zeroes
SET MM=%2
SET DD=%3
IF %MM:~0,1% EQU 0 SET MM=%MM:~1%
IF %DD:~0,1% EQU 0 SET DD=%DD:~1%
::

SET /A Month1 = ( %MM% - 14 ) / 12
SET /A Year1 = %1 + 4800
SET /A JDate = 1461 * ( %Year1% + %Month1% ) / 4 + 367 * ( %MM% - 2 -12 * %Month1% ) / 12 - ( 3 * ( ( %Year1% + %Month1% + 100 ) / 100 ) ) / 4 + %DD% - 32075
FOR %%A IN (Month1 Year1) DO SET %%A=
GOTO:EOF

Hello and Welcome to LinuxQuestions,

The task was assigned to YOU, right? So why do you expect us to do the work for you? There's no problem whatsoever if you ask for help when you cannot find a solution on your own and when you ask we'll point you in the right direction. But I don't believe that just giving you the solution helps you in learning Bash scripting. Here are some pointers to good documentation you can read to get you started with scripting in Linux.

Bash Guide for Beginners
Advanced Bash Scripting Guide

One thing: have a look at each line of your bat file and look for the equivalent command in Linux, then go through the man page for that command and try it out in a console before putting everything together in a script. Furthermore, drive letters like C: and E: don't exist in Linux so you'll need to get another approach. And to declare a variable you just declare it with the name, no use for the set command, like this:
Looking forward to your participation in the forums. Have fun with Linux.

Kind regards,

Eric

http://linuxcommand.org/learning_the_shell.php

http://mywiki.wooledge.org/BashPitfalls

The Advanced Bash Scripting Guide even has a page specifically on converting batch files to scripts:

http://tldp.org/LDP/abs/html/dosbatch.html

Also, please use [code][/code] tags around your code, to preserve formatting and to improve readability.