[Klug-general] Bash script to delete folders if they exists (revisited)

[Nathan Friend]

mmmm OK that's an interesting idea.  So the first part of the script builds
the contents of the exclusion file...

Cheers,

Nathan.

On Fri, Jul 15, 2011 at 6:49 PM, David Halliday <david.halliday at gmail.com>wrote:

>
> why not create the list using the find command.
>
> find directories matching pattern: find -type d -name fred*
> then pipe the output into grep: grep -v -f myFilesToKeep.txt
>
> Using -v reverses the output so it only outputs lines that aren't in the
> list (one per line).
>
> so:
> amon at amon1:~$ find / -maxdepth 1 -type d
> /
> /srv
> /sbin
> /var
> /selinux
> /cdrom
> /lib32
> /media
> /home
> /sys
> /tmp
> /mnt
> /opt
> /dev
> /usr
> /root
> /bin
> /boot
> /etc
> /lost+found
> /lib
> /proc
> amon at amon1:~$ more myFilesToKeep.txt
> tmp
> sys
> amon at amon1:~$ find / -maxdepth 1 -type d | grep -v -f myFilesToKeep.txt
> /
> /srv
> /sbin
> /var
> /selinux
> /cdrom
> /lib32
> /media
> /home
> /mnt
> /opt
> /dev
> /usr
> /root
> /bin
> /boot
> /etc
> /lost+found
> /lib
> /proc
>
> so:
>
> for MYDIR in `find / -maxdepth 1 -type d | grep -v -f myFilesToKeep.txt`
> do
>   rm -rf $MYDIR
> done
>
> *NOTE: Do not run this as is! unless you want to be left with only /tmp
> and /sys on your system!*
> *
> *
> But that's a starting point, play with the man pages for find and grep.
>
> On 15 July 2011 14:22, Nathan Friend <nathan.friend at gmail.com> wrote:
>
>> Afternoon KLUG,
>> Last year I wanted a bash script to delete folders if they existed in
>> a predefined list file.  The end result was:
>>
>> while read dir
>> do
>> if [ -d $dir ]
>> then
>> rm -R $dir
>> echo "Directory $dir found and deleted."
>> else
>> echo "Directory $dir not found."
>> fi
>> done < dir_list
>>
>>
>> dir_list file contains
>> /Users/user1
>> /Users/user2
>> /Users/user3
>>
>> This year I need to delete all files in the /Users/ folder except the ones
>> listed in dir_list.
>>
>> Any ideas?
>>
>> Cheers,
>>
>> Nathan.
>>
>> _______________________________________________
>> Kent mailing list
>> Kent at mailman.lug.org.uk
>> https://mailman.lug.org.uk/mailman/listinfo/kent
>>
>
>
> _______________________________________________
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> Kent at mailman.lug.org.uk
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>
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