i am just getting in to bash scripting, so don't be too harsh...
i've created this little backup script, and it's just awfull... ugly, doesn't work like I want it to, the works. anyways, i was hoping some of you might help me improve it and learn a little in the process.
what i wanted to do:
1. interactively take a filename (from user input) to backup w/ tar
1a - if the file wasn't present, or no input, exit
2. interactively take a "save path" (from user input) to save to
2a - if there isn't a directory w/ that name, or no input, exit
3. tar the $filename to the $savepath with a $timestamp filename
so far, i have this:
for reasons unknown (to me ) the "program" won't exit if no input is selected, and I haven't figured out how to do it if the file/directory doesn't exist.
any help folks?
edit -
i have just figured out that using
will work for what i wanted. now, how do i make an "overwrite" option if the $SAVEPATH specified already exists? as it is now, I'm assuming that I would have to use find (and put the two variables together, ie find -something -something $SAVEPATH$FILENAME)
Last edited by jmd9qs; 03-03-2009 at 03:15 PM..
Reason: correction based on new inpute
That is unnecessary; $PWD is always set to the current directory.
Quote:
The standard syntax for defining functions is:
Quote:
{
echo "$TITLE"
echo ""
echo " You are here: $PWD"
echo "These are the Files/Directories in $PWD"
echo "$DIR_TREE"
}
function press_enter
{
echo ""
echo -n "Please press Enter to continue: "
read
clear
}
##### Main
until [ "$SELECTION" = "n" ]; do
echo ""
dir_tree
echo ""
echo ""
echo "What would you like to backup? > "
read FILENAME
if [ "$FILENAME" = "\ " ]; then[/code]
You are comparing the input to a space, not to an empty string. Use:
Or:
Quote:
I haven't figured out how to do it if the file/directory doesn't exist.
That is unnecessary; $PWD is always set to the current directory.
I realize that... however, I'm learning how to write scripts. I like to implement what I already know into them as much as possible. think of it as practice...
I realize that... however, I'm learning how to write scripts. I like to implement what I already know into them as much as possible. think of it as practice...
You don't learn by doing unnecessary things. Knowing what is necessary is part of learning.
Quote:
so, by this, do you mean i should:
or is the : just to show that input goes here?
That's where your function goes. Using your code, it would be:
You don't learn by doing unnecessary things. Knowing what is necessary is part of learning.
good point... i'll take that into consideration next time.
Quote:
That's where your function goes. Using your code, it would be:
excellent... i'm pretty sure i coulda figured that one out, but thanks for taking the time to let me know.
now, on to my earlier question:
how do i make an "overwrite" option if the $SAVEPATH specified already exists? as it is now, I'm assuming that I would have to use find (and put the two variables together, ie find -something -something $SAVEPATH$FILENAME) but i'm not too sure of how to go about this.
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