$ sudo mkdir -p /var/log/journal $ grep -v '^#' /etc/systemd/journald.conf [Journal] Storage=persistent SystemMaxUse=300M $ sudo systemctl restart systemd-journald.service
$ LANG=C sudo journalctl --list-boots Failed to determine boots: No data available $ sudo journalctl --verify File corruption detected at /var/log/journal/c56cd17c662e3fc8c875401c5a259b37/system@0005f368d2135b48-c23b051fd742a581.journal~:25efd0 (of 838860 8 bytes, 29%). FAIL: /var/log/journal/c56cd17c662e3fc8c875401c5a259b37/system@0005f368d2135b48-c23b051fd742a581.journal~ (Message invalide) $ # remove corrupted files $ sudo rm /var/log/journal/c56cd17c662e3fc8c875401c5a259b37/system@0005f368d2135b48-c23b051fd742a581.journal~
[root@testserver ~]# isoinfo -d -i /dev/cdrom | grep -i -E 'block size|volume size' Logical block size is: 2048 Volume size is: 327867 [root@testserver ~]# dd if=/dev/cdrom of=test.iso bs=<block size from above> count=<volume size from above> status=progress
- Sources :
$ ps2pdf -dPDFSETTINGS=/ebook input.pdf output.pdf
Les autres alternatives de l'option -dPDFSETTINGS sont /prepress et /printer.
Ces options donnent une conversion de meilleure qualité mais de poids supérieure.
$ convert logo_elosys.png -resize 128x128 logo.png
$ convert -resize x48 -gravity center logo.png -flatten -colors 256 -background transparent favicon.ico
$ GIT_SSH_COMMAND='ssh -i id_rsa' git push origin master
$ python3 -m pip install --user ansible $ python3 -m pip install --user argcomplete $ activate-global-python-argcomplete --user
$ dd if=debian.iso of=/dev/sdb bs=4M
Ajouter PubkeyAcceptedKeyTypes +ssh-rsa dans ~/.ssh/config
Ou ssh-keygen -t ed25519
Ref: SSH-RSA key rejected with message "no mutual signature algorithm"
Configuré en maître-esclave, le serveur DNS Bind9 utilise un transfert dynamique des zones.
La modification des zones sur le maître n'est pas répercutée sur le slave si les commande suivantes ne sont pas exécutées:
$ sudo rndc freeze $ sudo rndc thaw
$ sudo journalctl -f -u bind9
This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.1)
Step 1 - Enable NBD on the Host
$ modprobe nbd max_part=8
Step 2 - Connect the QCOW2 as network block device
$ qemu-nbd --connect=/dev/nbd0 /var/lib/vz/images/100/vm-100-disk-1.qcow2
Step 3 - Find The Virtual Machine Partitions
$ fdisk /dev/nbd0 -l
Step 4 - Mount the partition from the VM
$ mount /dev/nbd0p1 /mnt/somepoint/
Step 5 - After you're done, unmount and disconnect
$ umount /mnt/somepoint/ $ qemu-nbd --disconnect /dev/nbd0 $ rmmod nbd
$ docker network create \ --driver=bridge \ --subnet=10.5.0.0/16 app_net \ --opt com.docker.network.bridge.name=app_net