strobocock

I wanted to change the file time (creation/access/change) according to the date and time encoded in the filename.
Here are two examples using awk:

For filenames of type '20221206_191944.jpg':
$ for f in *_*; do t=$(echo "$f" | awk -F '[_.]' '{print substr($1$2,0,12) "." substr($2,5,2)}'); echo touch -t "$t" "$f"; done >> ../timestamps.sh

which yields
touch -t 202212061919.44 20221206_191944.jpg

And for filenames of type 'IMG-20220419-WA0005.jpg':
$ for f in *WA*; do t=$(echo "$f" | awk -F '[-]' '{print $2 "0000"}'); echo touch -t "$t" "$f"; done >> ../timestamps.sh

which yields a
touch -t 202204190000 IMG-20220419-WA0005.jpg

Hi, long time no see. :-)

Fortschritt bei diskimages mit dd beobachten?
Werner Fischer hat in seinem Beitrag ein paar interessante Möglichkeiten aufgezählt: https://www.thomas-krenn.com/de/wiki/ISO_Image_von_CD_oder_DVD_unter_Linux_erstellen

* mit pv (pipe viewer):
dd if=/dev/cdrom | pv --size 700M | dd of=test.iso

* mit der dd-option status=progress (seit GNU Coreutils v8.24)

* mit signal killall -USR1 aus einer anderen shell (für ältere Coreutils)
watch -n 4 killall -USR1 dd
Kann man das vielleicht als subshell in einer einzigen Befehlszeile starten?

The Jolla Phone has several interesting partitions:

/dev/mmcblk0p19 on /drm type ext4
/dev/mmcblk0p18 on /firmware type vfat
/dev/mmcblk0p25 on /persist type ext4
/dev/mmcblk0p9 on /var/systemlog type ext4
/dev/fuse on /home/nemo/android_storage type fuse
/dev/mmcblk0p28 on / type btrfs
/dev/mmcblk0p28 on /home type btrfs


btrfs has snapshot support, so we use it.
Then all filesystems are tared and zipped and ssh'ed to a backup-host as follows:

btrfs subvolume snapshot -r / /snapshots/root
btrfs subvolume snapshot -r /home/ /snapshots/home

tar -cpz /drm/ | ssh markus@192.168.1.12 "( cat > Jolla_backup/`date +%y%m%d`_drm.tar.gz )"
tar -cpz /firmware/ | ssh markus@192.168.1.12 "( cat > Jolla_backup/`date +%y%m%d`_firmware.tar.gz )"
tar -cpz /persist/ | ssh markus@192.168.1.12 "( cat > Jolla_backup/`date +%y%m%d`_persist.tar.gz )"
tar -cpz /var/systemlog/ | ssh markus@192.168.1.12 "( cat > Jolla_backup/`date +%y%m%d`_systemlog.tar.gz )"
tar -cpz /home/nemo/android_storage/ | ssh markus@192.168.1.12 "( cat > Jolla_backup/`date +%y%m%d`_android_storage.tar.gz )"

tar -cpz /snapshots/root/ | ssh markus@192.168.1.12 "( cat > Jolla_backup/`date +%y%m%d`_root.tar.gz )"
tar -cpz /snapshots/home/ | ssh markus@192.168.1.12 "( cat > Jolla_backup/`date +%y%m%d`_home.tar.gz )"

btrfs subvolume delete /snapshots/home/ /snapshots/root/

after were finished the snapshots are deleted and were fine.