Remove timestamp from multiple filename

Shell Programming and Scripting
1

could you pls help me out in PERL

i have a requirement like

a.dat.<timestamp> 
b.dat.<timestamp> 
c.dat.<timestamp>

can you pls help me to rename/remove timestamp

a.dat 
b.dat 
c.dat

Is there any way to remove timestamp alone
Thanks

2 
for i in *.dat.?*
do
mv "$i" "${i%.*}"
done

# ls *dat*
a.dat.<timestamp>  b.dat.<timestamp>  c.dat.<timestamp>  d.dat
# ls *dat.?*
a.dat.<timestamp>  b.dat.<timestamp>  c.dat.<timestamp>
# for i in *dat.?*
> do
> echo "mv $i ${i%.*}"
> mv $i ${i%.*}
> done
mv a.dat.<timestamp> a.dat
mv b.dat.<timestamp> b.dat
mv c.dat.<timestamp> c.dat
# ls *dat*
a.dat  b.dat  c.dat  d.dat
#
3

Can you pls let me know what needs to be done for this error when tried to executing

Missing $ on loop variable at line 1.

Thanks in advance

4

please copy paste the code you used so we can check if we see something wrong.

by the way, which plateform and which shell are you using ?