Comandi Linux

Gnu.org_Builtin-Index
Learning.lpi.org/it
Tecmint.com
fr@internet-fr-casa2
nano .bash_history
nano .bash_aliases
sudo cat .pwd_ocm-web_scan
sudo cat .pwd_ocm-web_admin
sudo cat .pwd_internet3
sudo apt update && sudo apt upgrade
sudo apt autoremove
chmod 777 ocm.kdbx — sudo
chmod g+w * — sudo
chown root:root .pwd* — sudo
chown fr:fr gnote/ — sudo
crontab -e — sudo
df -a -h
distro-info -I
du -sk */ | sort -rn
du -hd 1
du -sh ./Documenti_FRANCESCO/ | sort -rn
hostname -a — sudo
fdisk -l /dev/sda — sudo
find . -type f -size +180M
free -h
fstab nano /etc/fstab
history | grep ssh
ip addr show
iptables -L -v
locate -b *.pdf | grep -i micro7
locate *.pdf 1M
locate *.pdf | grep -i francesco
locate *.pdf | grep 600
locate *fattur*.pdf | less
locate fstab
ll Scansioni_su_OCM-WEB/
ln -s [source-file-path] [symbolic-link-path] —– link simbolici
ln -sf testfile nuovo_apri_testfile
ls -la /home/ocm | grep pwd
ls -l ~/.local/share/
ls -l ~/.local/share/Trash/files
lsb_release -a
lscpu
lshw -C network
mkdir prova
mount -a
pwd
reboot
rm -rf /home/fr/.local/share/Trash/files/* sudo
devdev.it/comando-rsync-esempi
rsync -avrzh –delete /media/fr/Elements/BK/ /home/fr/Documenti/Backup/BK
rsync -zvrah /media/fr/Elements/BK/ /home/fr/Documenti/Backup/BK
rsync -zvrah ./media/fr/Elements/BK/ ./home/fr/Documenti/Backup/BK
sudo rsync –delete -av ./home/fr/Scaricati/FOTO/TO1 ./home/fr/Scaricati/FOTO/TO2
———————————————————————————-
451 sudo rsync –delete -zvrah home/fr/Documenti ./media/fr/Volume/FRANCESCO_INTERNET_CASA
452 sudo rsync –delete -zvrah ome/fr/Documenti ./media/fr/Volume/FRANCESCO_INTERNET_CASA
454 sudo rsync –delete -zvrah home/fr/Documenti ./media/fr/Volume/FRANCESCO_INTERNET_CASA
455 sudo rsync –delete -zvrahE home/fr/Documenti ./media/fr/Volume/FRANCESCO_INTERNET_CASA
458 sudo rsync –delete -zvrahE home/fr/Documenti ./media/fr/Volume/FRANCESCO_INTERNET_CASA
459 df -h
460 fdisk -l
461 sudo fdisk -l
462 sudo rsync –delete -zvrah home/fr/Documenti ./media/fr/Volume/FRANCESCO_INTERNET_CASA
———————————————————————————-
scp ocm@internet-mg:/home/ocm/.thunderbird/ocm2022.admin/* ocm2022.admin/
scp ocm@192.168.2.106:/home/ocm/.thunderbird/ocm2020.admin/* ocm2020.admin/
scp fr@192.168.2.111:/home/fr/.pwd*
shutdown -r now
smbpasswd -a ocm
sudo sync; echo 3 > /proc/sys/vm/drop_caches
sudo updatedb
tar Compress an entire directory by running tar -zcvf file. tar. gz /path/to/dir/command in Linux. To compress a single file by running tar -zcvf file.28
https://www.cyberciti.biz/faq/how-to-tar-a-file-in-linux-using-command
top
shred
shred -vfz /dev/sde —- sudo
rm‌ ‌-rf‌ ‌~/.local/share/Trash/files/*‌ —- sudo
umount -a
updatedb
w – user
wget –no-directories –content-disposition -e robots=off -*.pdf -r http://www.ipritalia.com/
*******************************************************
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ED25519 key sent by the remote host is
SHA256:UyLdaQ1FQsDeH0De3Pv6B68zHDw4DRxwWgEjtlYlkYc.
Please contact your system administrator.
Add correct host key in /home/fr/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /home/fr/.ssh/known_hosts:7
remove with:
ssh-keygen -f “/home/fr/.ssh/known_hosts” -R “192.168.2.40”
Host key for 192.168.2.40 has changed and you have requested strict checking.
Host key verification failed.
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

Disco

sudo du -hd 1 ./Documenti_FRANCESCO/ | sort -rn
sudo pvs –all
lsblk

Rete

network:///
ping 51.178.19.76
ping www.ditecautomations.com
nano /etc/fstab

Samba

Wiki.ubuntu-it.org/Server/Samba
Guide.debianizzati.org_SAMBA:_configurazione_lato_server
Debian-handbook.info_samba
Raspberrypi.com/tutorials/nas-box-raspberry-pi-tutorial
Instructables.com/How-to-Make-File-Server-Using-Raspberry-Pi
Ubuntu.com/server/docs/samba-as-a-file-server
Ubuntu.com/tutorials/install-and-configure-samba
Phoenixnap.com_ubuntu-samba
Forum.ubuntu-it.org/viewtopic
Linuxbabe.com/ubuntu/install-samba-server-file-share
Di.univr.it_SAMBApdf
Tenace Tecnocrate
sudo nano /etc/samba/smb.conf
r@fr-casa:~$
FRANCESC CASA
/etc/fstab
GNU nano 6.2 /etc/fstab
/etc/fstab: static file system information.
#
Use ‘blkid’ to print the universally unique identifier for a
device; this may be used with UUID= as a more robust way to name devices
that works even if disks are added and removed. See fstab(5).
#
/ was on /dev/sda2 during installation
UUID=bbf1850a-bd42-41ba-a707-32b767956cde / ext4 errors=remount-ro 0 1
/boot/efi was on /dev/sda1 during installation
UUID=D7ED-CB0C /boot/efi vfat umask=0077 0 1
/swapfile none swap sw 0 0
disco 2
/dev/disco2/lv1 /mnt/disco2 ext4 defaults 0 1
——————————————————————–
cartelle scansioni
//OCM-WEB-2204/scansioni /home/fr/Scansioni_su_OCM-WEB cifs credentials=/home/fr/.pwd_ocm-web_scan,uid=fr,forceuid,gid=fr,forcegid 0 0
//internet-1/…
//internet-2/documenti /home/ocm/Scansioni_su_Internet2 cifs credentials=/home/ocm/.pwd_internet2,uid=ocm,forceuid,gid=ocm,forcegid 0 0
//internet-3/scansioni /home/fr/Scansioni_su_Internet3 cifs credentials=/home/fr/.pwd_internet3,uid=fr,forceuid,gid=fr,forcegid 0 0
——————————————————————–
webserver
//OCM-WEB-2204/docs /home/fr/Documenti_condivisi cifs credentials=/home/fr/.pwd_ocm-web,uid=fr,forceuid,gid=fr,forcegid 0 0
//OCM-WEB-2204/docs/FIRME_mail /home/Firme cifs credentials=/home/fr/.pwd_ocm-web,uid=fr,forceuid,gid=fr,forcegid 0 0
//OCM-WEB-2204/docsfr /home/fr/Documenti_Francesco cifs credentials=/home/fr/.pwd_ocm-web,uid=fr,forceuid,gid=fr,forcegid 0 0
——-

Ssh

ls ~/.ssh
ssh -v host locale
sudo systemctl status ssh
sudo apt install openssh-server
sudo nano /etc/ssh/sshd_config
START
sudo /etc/init.d/ssh start
sudo service ssh start
sudo systemctl start ssh
STOP
sudo /etc/init.d/ssh stop
sudo service ssh stop
sudo systemctl stop ssh
RESTART
sudo /etc/init.d/ssh restart
sudo service ssh restart
sudo systemctl restart ssh
STATUS
sudo /etc/init.d/ssh status
sudo service ssh status
sudo systemctl status ssh
ssh-keygen -f “/home/fr/.ssh/known_hosts” -R “192.168.2.40”
———————————————————————————
https://turbolab.it/server-1224/guida-come-disattivare-login-ssh-password-ubuntu-server-linux-654
https://kb.iu.edu/d/aews
https://docs.rockylinux.org/it/guides/security/ssh_public_private_keys/
https://guide.debianizzati.org/index.php/OpenSSH:_file_di_configurazione
———————————————————————————
Raspberrypi.com_SSH Remote-access
—————-raspy
hostname -I
nmcli device show (Network Manager)
ping raspberrypi.local supports multicast DNS)
sudo nmap -sn 192.168.1.0/24
sudo touch /boot/firmware/ssh
sudo reboot
Configure SSH without a password
~/.ssh/id_rsa.pub
ls ~/.ssh (per vedere se ci sono le chiavi private e epubbliche)
ssh-keygen
Aggiungi la chiave SSH al tuo elenco di identità SSH
eval “$(ssh-agent -s)”
ssh-add ~/.ssh/id_rsa
Copia una chiave pubblica sul tuo Raspberry Pi
ssh-copy-id @
Copia manualmente una chiave pubblica sul tuo Raspberry Pi SERVER
su server
mkdir .ssh
chmod 700 .ssh
Sul tuo computer abituale , usa scpper copiare la tua chiave pubblica in un file denominato .ssh/authorized_keyssul tuo Raspberry Pi:
scp .ssh/id_rsa.pub @:.ssh/authorized_keys
Il comando sopra presuppone che tu non abbia mai autorizzato alcuna chiave per accedere al tuo Raspberry Pi. Se hai precedentemente aggiunto almeno una chiave, dovresti invece aggiungere una nuova riga contenente la chiave pubblica alla fine del authorized_keysfile per preservare le tue chiavi esistenti.
Quando richiesto, inserisci la password del tuo account utente sul Raspberry Pi.
Quindi, sul tuo Raspberry Pi , configura i permessi per il authorized_keysfile:
chmod 644 .ssh/authorized_keys
Ora puoi connetterti al tuo Raspberry Pi senza inserire una password.
—————-raspy
———————————————————————————
Wiki.debian.org_it_SSH
apt install openssh-client
apt install openssh-server
I principali file di configurazione sono nella directory /etc/ssh :
ssh_config : file di configurazione del client
sshd_config : file di configurazione del server
A partire da Bullseye, i file di configurazione sono letti anche dalle seguenti sottodirectory:
/etc/ssh/ssh_config.d/*.conf : file di configurazione del client
/etc/ssh/sshd_config.d/*.conf : file di configurazione del serve
Rigenerare le chiavi dell’host
rm /etc/ssh/ssh_host_*
dpkg-reconfigure openssh-server
Per generare la chiave si usa il programma ssh-keygen
ssh-keygen -t rsa ( in ~/.ssh – viene richiesta una passphrase)
Si può copiare la propria chiave pubblica su un host remoto usando il comando ssh-copy-id
ssh-copy-id -i ~/.ssh/id_rsa.pub $remote_user@$remote_host
Ora ci si può connettere semplicemente all’host remoto e verrà richiesta la passphase
SERVER
service ssh restart
sshd -T | sort
———————————————————————————
Ubuntu.com_Community_SSH
/etc/ssh/ssh_config
env | grep -i ssh (# Controllare se ssh-agent e’ in esecuzione)
ssh -v localhost (verifica se ssh gira in locale)
ps -A | grep sshd (verifica il demone se gira)
Ubuntu.com_service-openssh
Ubuntu.com_SSH/OpenSSH/Configuring
https://wiki.ubuntu-it.org/InternetRete/DesktopRemoto/OpenSsh

Wiki.ubuntu-it.org/InternetRete/DesktopRemoto/OpenSsh

—————————-APP
scp $file_sorgente $utente_remoto@$host_remoto:$file_destinazione
scp .ssh/id_rsa.pub @:.ssh/authorized_keys
scp .ssh/id_rsa.pub fra<192.168.2.40:.ssh/id_rsa.pub
—————————-APP
https://help.ovhcloud.com/csm/it-dedicated-servers-creating-ssh-keys?id=kb_article_view&sysparm_article=KB0043384
Cloud.ibm.com_ssh-keys
It.wikipedia.org_Secure_Shell
Orvietolinux.it_Connessione-ssh-ubuntu

Nano

sudo nano /etc/cups/snmp.conf
sudo nano /etc/modprobe.d/blacklist.conf
sudo nano .pwd_ocm-web
sudo nano .pwd_ocm-web_scan
sudo nano .ssh/authorized_keys
sudo nano .ssh/known_hosts
sudo nano /etc/fstab
sudo nano /etc/hosts
sudo nano /etc/named.
sudo nano /etc/named.conf
sudo nano /etc/named.nslookup ocmflex.com
sudo nano /etc/network/interfaces
sudo nano /etc/NetworkManager/conf.d/
sudo nano /etc/samba/smb.conf
sudo nano /etc/samba/smb.conf
sudo nano /etc/ssh/sshd_config
sudo nano /etc/ssh/sshd_config
sudo nano authorized_keys
sudo nano profiles.ini

Cat

sudo cat /etc/fstab
sudo cat /etc/fstab
sudo cat /etc/fstab | grep .pwd
sudo cat /etc/named.conf
sudo cat /etc/NetworkManager/conf.d/
sudo cat /etc/passwd
sudo cat /etc/passwd
sudo cat /etc/passwd | grep scan
sudo cat /etc/resolv.conf
sudo cat /etc/samba/smb.conf
sudo cat /etc/ssh/ssh_config
sudo cat /etc/ssh/ssh_config.d/*.conf
sudo cat /root/.ssh/id_rsa.pub
sudo cat syslog | grep a
sudo cat syslog | grep cub

File Configurazione

sudo nano /etc/resolv.conf ( 9 )
————
nameserver 127.0.0.53
options edns0 trust-ad
search ocmflex.local
————

Script

Esempio

chmod a+x prova01_2024.sh (to let everyone run your script)
chmod u+x prova01_2024.sh (to let yourself but no-one else run it)