string manipulation in a shell script

[Henrik W Lund]

Kathy Quinlan wrote:

> Hi guys and Gals,
>
> I have a simple script:
>
> #!/bin/sh
>
> a=ia$(date +%d%m%Y)
>
> tar -cf "$a.zip" "/usr/home/projects/lunaria/items all"
> mv $a.zip /usr/home/itemsall/
>
> this nearly does what I want, I would like to put the time in the file 
> name aswell. If I put the %T in the date variable, the resultant value 
> for $a has : seperating the hours, minutes and seconds.
>
> Try as I might, I can not find away to remove the : and tar spits the 
> dummy at them and it causes an IO device error.
>
> I looked through sed and awk, and spent an hour playing, but all to no 
> avail.
>
> Anyhelp apreciated,
>
> Regards,
>
> Kat.

Greetings!

Did you try this:

b=`sed -e s/:/-/g $a`   #Replace all colons in the string $a with dashes

and then use the name $b.tar instead of $a.zip (I'd use the .tar instead 
of .zip for a tar archive. Helps with consitency)?

I know I used that line in order to strip empty spaces from filenames, 
replacing them with underscores.

Hope this helps!
-Henrik W Lund