Shell Programming and Scripting

I am trying to access batch process that take place each nite. I am using Solaris 5.8 (and i am used to redhat). however I am trying to access say a certain directory.

The home/oradev , is the directory...in there i am trying to access say a batch file within this, how can see if they are in that directory.
I have done a Ls -ltr which displays everthing...how can i determine the bathc files ,

for example home/oradev dir contains:
-rw-r--r-- 1 oradev dba 6608 May 28 2002 temp_DEV_tanga.txt
drwxr-xr-x 2 oradev dba 512 May 29 2002 templbac
-rw-r--r-- 1 oradev dba 6698 May 30 2002 config_DEV.txt
drwxr-xr-x 3 oradev dba 512 May 30 2002 rapidinstall
drwx------ 2 oradev dba 512 Jun 17 2002 nsmail
drwx------ 2 oradev dba 512 Jun 24 2002 Mail
-rw-r--r-- 1 oradev dba 48195 Jul 1 2002 ETLdbms.lst
-rw-r--r-- 1 oradev dba 708608 Jul 1 2002 ASTCUTM1_v0_2.fmb
-rw-r--r-- 1 oradev dba 12318 Aug 17 2002 afiedt.buf
-rw-r--r-- 1 oradev dba 94956 Nov 7 2002 EUROST02.fmx
-rw-r--r-- 1 oradev dba 77824 Nov 15 2002 EUROST07.rdf
-rw-r--r-- 1 oradev dba 507904 Dec 5 2002 gjn.fmb
-rw-r--r-- 1 oradev dba 520192 Dec 6 2002 EUROST02.fmb
-rw-r--r-- 1 oradev dba 590 Jan 28 2003 forms_env
-rw-r--r-- 1 oradev dba 1024 Jan 28 2003 Data_Patch_0_10.tar
-rw-rw-r-- 1 oradev dba 878 May 28 16:48 file_sys.temp
-rw-r--r-- 1 oradev dba 201921 Sep 9 14:17 Release_v_0_2_5.tar.Z
-rw-r--r-- 1 root other 0 Oct 8 11:45 t
-rw------- 1 oradev dba 0 Oct 8 14:57 dead.letter


what does this do also:?
echo $1

any ideas...

Cheers

Hope I didn't misunderstand your meaning.

if [[ -f /home/oradev/batch_file ]]; #check batch file exist or not
then
echo "File exists!" #do something here
else # If file not found
echo "File not exists!" #do something here
fi

about your second question. if you have a file called show_var and it contains "echo $1". Then,

show_var "hello world"

hello world #Output here