Archiving script

[jayjaybigs]

Hello All,

I have couple of files named as follows:

file1.txt
file2.txt

I am intrested in zipping them up, tar, add date and move to another directory to make it look as follows:

allfiles.May.tgz

Here is my effort: This file is named myscript.sh
#!/usr/bin/sh

tar -czvf logfiles.date.tgz files1.txt files2.txt

mv logfiles.May.tgz new_location/

exit

HOwever, I am having some problems. Also, how can i ran this shell script without typeing:
bash myscript.sh

 

[azzazzello]

like this?

#!/usr/bin/bash

MONTH=`date '+%b'`

tar -cvzf logfiles.$MONTH.tgz files1.txt files2.txt
mv logfiles.$MONTH.tgz new_location

 

[pcunix]

And you run it without typing "bash" by

chmod 755 yourscript

(or 700 yourscript if you want no one but you to be able to use it)

and then store it somewhere in your $PATH

(type "echo $PATH" and put your script in one of the directories shown)


Tony Lawrence
Linux/Unix/Mac OS X Resources

http://aplawrence.com

 

[jayjaybigs]

before taring the files, I want to check for the exsitence of the files, like so:

if ls *.log
then
echo -=- Now renaming files
# rename files
mv logfile.log logfile.$MONTH.log
mv nifty.* nifty.$MONTH.log
# move files to backup directory.
mv *.$MONTH.* $DEST
echo -=- Archiving Process completed....
else
echo -=- Log files does not exist
fi

However this does not help, please advise.

 

[pcunix]

It would work if you just changed one line:

if `ls *.log`


If you want to suppress the output of the ls do


if `ls *.log > /dev/null 2>&1`

There are other ways to do this. For example, I might do:

count=`ls *.log 2>/dev/null | wc -l`
if [ "$count" -gt 0 ]
then
echo "$count files to back up"

.. etc.





Tony Lawrence
Linux/Unix/Mac OS X Resources

http://aplawrence.com

 

[dchoulette]

No need to backquote the [tt]ls[/tt]: you don't want the output of [tt]ls[/tt], just its exit code ([tt]ls[/tt] returns an error if a file does not exist).
Just remove the standard and error outputs and check the return code (it's what [tt]if[/tt] do):

if ls *.log >/dev/null 2>&1; then
    : # Here at least one .log file exists
else
    : # No .log file in current dir
fi

--------------------

Denis