[Q] CWM flash script and bash help needed - Android Q&A, Help & Troubleshooting

So basically this is the idea:
in the zip, there is
/system/media/audio/ui/Lock.ogg
/bash_script/backup.sh
I want to move the original Lock.ogg to /system/media/audio/backup/
thank, unpack the new package
delete the script from /tmp/system
here what I have in the updater script:
Code:
ui_print("****************************************");
run_program("/sbin/busybox", "mount", "/cache");
run_program("/sbin/busybox", "mount", "/data");
run_program("/sbin/busybox", "mount", "/system");
ui_print("Extracting sounds... ");
ui_print("");package_extract_dir("cache", "/cache");
package_extract_dir("bash_script", "/tmp/bash_script");
set_perm(0, 0, 0755, "/tmp/bash_script/backup_create.sh");
run_program("tmp/bash_script/backup_create.sh");
delete("/tmp/bash_script/backup_create.sh");
ui_print("Backup created!");
ui_print("");
package_extract_dir("system", "/system");
unmount("/cache");unmount("/data");
unmount("/system");
ui_print("****************************************");
here is the .sh part:
Code:
mkdir -p /system/media/audio/backup;
cp /system/media/audio/ui/Lock.ogg /system/media/audio/backup;
now after reboot it says system process failed to load or similar error, which of course if eliminated via "fix permissions"
I had this line in the code too:
set_perm_recursive(0, 0, 0755, 0644, "/system");
which of course... just fcked up my phone and won't boot but glad I make backup, if you ask, I just copied this code thinking it would resolve the problem... well... it wasn't.
well the main question.
what permissions to set back, where to, and what lines should I add?
EDIT:
rough set back but
delete_recursive("/cache");
delete_recursive("data/dalvik-cache");
resolved the problem