very simple question, what is my mistake here
?
thor@jump-host ~$ ssh banner@stapp03
The authenticity of host 'stapp03 (10.244.196.58)' can't be established.
ED25519 key fingerprint is SHA256:yEyN8qvzhNxfcKVE+H05zwQPmQMKCXj4JyGWuOP1HIg.
This key is not known by any other names.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added 'stapp03' (ED25519) to the list of known hosts.
banner@stapp03's password:
[banner@stapp03 ~]$ ssh-keygen
Generating public/private ed25519 key pair.
Enter file in which to save the key (/home/banner/.ssh/id_ed25519):
Created directory '/home/banner/.ssh'.
Enter passphrase for "/home/banner/.ssh/id_ed25519" (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/banner/.ssh/id_ed25519
Your public key has been saved in /home/banner/.ssh/id_ed25519.pub
The key fingerprint is:
SHA256:sC4l1fIQ3vrjiKq4DsbU91g7fXC5Y5idUnBMRbkw1cw banner@stapp03
The key's randomart image is:
+--[ED25519 256]--+
| . .++= |
| . + oo . E |
| * o. oo . |
| . . B o .. |
| . ...+.S. + |
|o .++.o B o |
|.o ...+o= B |
|+ o o..+ . |
|=+... . . |
+----[SHA256]-----+
[banner@stapp03 ~]$
[banner@stapp03 ~]$
[banner@stapp03 ~]$
[banner@stapp03 ~]$ ssh-copy-id natasha@ststor01
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/home/banner/.ssh/id_ed25519.pub"
The authenticity of host 'ststor01 (10.244.244.147)' can't be established.
ED25519 key fingerprint is SHA256:yEyN8qvzhNxfcKVE+H05zwQPmQMKCXj4JyGWuOP1HIg.
This key is not known by any other names.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
natasha@ststor01's password:
Number of key(s) added: 1
Now try logging into the machine, with: "ssh 'natasha@ststor01'"
and check to make sure that only the key(s) you wanted were added.
[banner@stapp03 ~]$ cd /
[banner@stapp03 /]$ ;s
-bash: syntax error near unexpected token `;'
[banner@stapp03 /]$ ls -la
total 92
dr-xr-xr-x 1 root root 4096 Aug 11 03:34 .
dr-xr-xr-x 1 root root 4096 Aug 11 03:34 ..
-rw-r--r-- 1 root root 0 Aug 11 02:44 .autorelabel
dr-xr-xr-x 2 root root 4096 Jun 25 2024 afs
drwxrwxrwx 2 root root 4096 Aug 11 03:33 archives
lrwxrwxrwx 1 root root 7 Jun 25 2024 bin -> usr/bin
dr-xr-xr-x 2 root root 4096 Jun 25 2024 boot
drwxr-xr-x 7 root root 460 Aug 11 02:44 dev
-rwxrwxr-x 1 root root 2262 Mar 5 14:49 entrypoint.sh
drwxr-xr-x 1 root root 4096 Aug 11 02:44 etc
drwxr-xr-x 1 root root 4096 Mar 5 14:52 home
lrwxrwxrwx 1 root root 7 Jun 25 2024 lib -> usr/lib
lrwxrwxrwx 1 root root 9 Jun 25 2024 lib64 -> usr/lib64
drwx------ 2 root root 4096 Mar 2 04:13 lost+found
drwxr-xr-x 2 root root 4096 Jun 25 2024 media
drwxr-xr-x 2 root root 4096 Jun 25 2024 mnt
drwxr-xr-x 1 root root 4096 Aug 11 02:44 opt
dr-xr-xr-x 1110 root root 0 Aug 11 02:44 proc
dr-xr-x--- 1 root root 4096 Mar 5 14:50 root
drwxr-xr-x 23 root root 680 Aug 11 02:44 run
lrwxrwxrwx 1 root root 8 Jun 25 2024 sbin -> usr/sbin
drwxrwxrwx 2 root root 4096 Aug 11 03:33 scripts
drwxr-xr-x 2 root root 4096 Jun 25 2024 srv
dr-xr-xr-x 13 nobody nobody 0 Mar 16 16:26 sys
drwxrwxrwt 12 root root 4096 Aug 11 03:34 tmp
drwxr-xr-x 1 root root 4096 Mar 2 04:13 usr
drwxr-xr-x 1 root root 4096 Aug 11 02:44 var
[banner@stapp03 /]$ sudo chmod 777 /archives/
[banner@stapp03 /]$ sudo chown banner:banner /archives/
[banner@stapp03 /]$ ls -la
total 92
dr-xr-xr-x 1 root root 4096 Aug 11 03:35 .
dr-xr-xr-x 1 root root 4096 Aug 11 03:35 ..
-rw-r--r-- 1 root root 0 Aug 11 02:44 .autorelabel
dr-xr-xr-x 2 root root 4096 Jun 25 2024 afs
drwxrwxrwx 2 banner banner 4096 Aug 11 03:33 archives
lrwxrwxrwx 1 root root 7 Jun 25 2024 bin -> usr/bin
dr-xr-xr-x 2 root root 4096 Jun 25 2024 boot
drwxr-xr-x 7 root root 460 Aug 11 02:44 dev
-rwxrwxr-x 1 root root 2262 Mar 5 14:49 entrypoint.sh
drwxr-xr-x 1 root root 4096 Aug 11 02:44 etc
drwxr-xr-x 1 root root 4096 Mar 5 14:52 home
lrwxrwxrwx 1 root root 7 Jun 25 2024 lib -> usr/lib
lrwxrwxrwx 1 root root 9 Jun 25 2024 lib64 -> usr/lib64
drwx------ 2 root root 4096 Mar 2 04:13 lost+found
drwxr-xr-x 2 root root 4096 Jun 25 2024 media
drwxr-xr-x 2 root root 4096 Jun 25 2024 mnt
drwxr-xr-x 1 root root 4096 Aug 11 02:44 opt
dr-xr-xr-x 1110 root root 0 Aug 11 02:44 proc
dr-xr-x--- 1 root root 4096 Mar 5 14:50 root
drwxr-xr-x 23 root root 680 Aug 11 02:44 run
lrwxrwxrwx 1 root root 8 Jun 25 2024 sbin -> usr/sbin
drwxrwxrwx 2 root root 4096 Aug 11 03:33 scripts
drwxr-xr-x 2 root root 4096 Jun 25 2024 srv
dr-xr-xr-x 13 nobody nobody 0 Mar 16 16:26 sys
drwxrwxrwt 12 root root 4096 Aug 11 03:34 tmp
drwxr-xr-x 1 root root 4096 Mar 2 04:13 usr
drwxr-xr-x 1 root root 4096 Aug 11 02:44 var
[banner@stapp03 /]$ sudo chown banner:banner /scripts/
[banner@stapp03 /]$ sudo chmod 777 /scripts/
[banner@stapp03 /]$ ls -la
total 92
dr-xr-xr-x 1 root root 4096 Aug 11 03:35 .
dr-xr-xr-x 1 root root 4096 Aug 11 03:35 ..
-rw-r--r-- 1 root root 0 Aug 11 02:44 .autorelabel
dr-xr-xr-x 2 root root 4096 Jun 25 2024 afs
drwxrwxrwx 2 banner banner 4096 Aug 11 03:33 archives
lrwxrwxrwx 1 root root 7 Jun 25 2024 bin -> usr/bin
dr-xr-xr-x 2 root root 4096 Jun 25 2024 boot
drwxr-xr-x 7 root root 460 Aug 11 02:44 dev
-rwxrwxr-x 1 root root 2262 Mar 5 14:49 entrypoint.sh
drwxr-xr-x 1 root root 4096 Aug 11 02:44 etc
drwxr-xr-x 1 root root 4096 Mar 5 14:52 home
lrwxrwxrwx 1 root root 7 Jun 25 2024 lib -> usr/lib
lrwxrwxrwx 1 root root 9 Jun 25 2024 lib64 -> usr/lib64
drwx------ 2 root root 4096 Mar 2 04:13 lost+found
drwxr-xr-x 2 root root 4096 Jun 25 2024 media
drwxr-xr-x 2 root root 4096 Jun 25 2024 mnt
drwxr-xr-x 1 root root 4096 Aug 11 02:44 opt
dr-xr-xr-x 1128 root root 0 Aug 11 02:44 proc
dr-xr-x--- 1 root root 4096 Mar 5 14:50 root
drwxr-xr-x 23 root root 680 Aug 11 02:44 run
lrwxrwxrwx 1 root root 8 Jun 25 2024 sbin -> usr/sbin
drwxrwxrwx 2 banner banner 4096 Aug 11 03:33 scripts
drwxr-xr-x 2 root root 4096 Jun 25 2024 srv
dr-xr-xr-x 13 nobody nobody 0 Mar 16 16:26 sys
drwxrwxrwt 12 root root 4096 Aug 11 03:34 tmp
drwxr-xr-x 1 root root 4096 Mar 2 04:13 usr
drwxr-xr-x 1 root root 4096 Aug 11 02:44 var
[banner@stapp03 /]$ cd /scripts/
[banner@stapp03 scripts]$ sudo yum install nano
Extra Packages for Enterprise Linux 9 - x86_64 14 MB/s | 21 MB 00:01
Extra Packages for Enterprise Linux 9 openh264 2.8 kB/s | 2.5 kB 00:00
Extra Packages for Enterprise Linux 9 - Next - 1.3 MB/s | 265 kB 00:00
Dependencies resolved.
================================================================================
Package Architecture Version Repository Size
================================================================================
Installing:
nano x86_64 5.6.1-7.el9 baseos 711 k
Transaction Summary
================================================================================
Install 1 Package
Total download size: 711 k
Installed size: 2.7 M
Is this ok [y/N]: y
Downloading Packages:
nano-5.6.1-7.el9.x86_64.rpm 1.4 MB/s | 711 kB 00:00
--------------------------------------------------------------------------------
Total 1.1 MB/s | 711 kB 00:00
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : nano-5.6.1-7.el9.x86_64 1/1
Running scriptlet: nano-5.6.1-7.el9.x86_64 1/1
Verifying : nano-5.6.1-7.el9.x86_64 1/1
Installed:
nano-5.6.1-7.el9.x86_64
Complete!
[banner@stapp03 scripts]$ sudo nano official_archive.sh
[banner@stapp03 scripts]$ ls -la
total 12
drwxrwxrwx 2 banner banner 4096 Aug 11 03:44 .
dr-xr-xr-x 1 root root 4096 Aug 11 03:39 ..
-rw-r--r-- 1 root root 1070 Aug 11 03:44 official_archive.sh
[banner@stapp03 scripts]$ sudo chmod 777 official_archive.sh
[banner@stapp03 scripts]$ sudo chown banner:banner official_archive.sh
[banner@stapp03 scripts]$ ls -la
total 12
drwxrwxrwx 2 banner banner 4096 Aug 11 03:44 .
dr-xr-xr-x 1 root root 4096 Aug 11 03:45 ..
-rwxrwxrwx 1 banner banner 1070 Aug 11 03:44 official_archive.sh
[banner@stapp03 scripts]$ ssh natasha@ststor01
[natasha@ststor01 ~]$ cd /
[natasha@ststor01 /]$ ls -la
total 88
dr-xr-xr-x 1 root root 4096 Aug 11 03:45 .
dr-xr-xr-x 1 root root 4096 Aug 11 03:45 ..
-rw-r--r-- 1 root root 0 Aug 11 02:43 .autorelabel
dr-xr-xr-x 2 root root 4096 Jun 25 2024 afs
drwxrwxrwx 2 root root 4096 Aug 11 03:33 archives
lrwxrwxrwx 1 root root 7 Jun 25 2024 bin -> usr/bin
dr-xr-xr-x 2 root root 4096 Jun 25 2024 boot
drwxr-xr-x 7 root root 460 Aug 11 02:43 dev
-rwxrwxr-x 1 root root 2262 Mar 5 14:49 entrypoint.sh
drwxr-xr-x 1 root root 4096 Aug 11 02:43 etc
drwxr-xr-x 1 root root 4096 Mar 5 14:52 home
lrwxrwxrwx 1 root root 7 Jun 25 2024 lib -> usr/lib
lrwxrwxrwx 1 root root 9 Jun 25 2024 lib64 -> usr/lib64
drwx------ 2 root root 4096 Mar 2 04:13 lost+found
drwxr-xr-x 2 root root 4096 Jun 25 2024 media
drwxr-xr-x 2 root root 4096 Jun 25 2024 mnt
drwxr-xr-x 1 root root 4096 Aug 11 02:43 opt
dr-xr-xr-x 1095 root root 0 Aug 11 02:43 proc
dr-xr-x--- 1 root root 4096 Mar 5 14:50 root
drwxr-xr-x 23 root root 640 Aug 11 02:43 run
lrwxrwxrwx 1 root root 8 Jun 25 2024 sbin -> usr/sbin
drwxr-xr-x 2 root root 4096 Jun 25 2024 srv
dr-xr-xr-x 13 nobody nobody 0 Mar 5 21:37 sys
drwxrwxrwt 13 root root 4096 Aug 11 03:45 tmp
drwxr-xr-x 1 root root 4096 Mar 2 04:13 usr
drwxr-xr-x 1 root root 4096 Aug 11 02:43 var
[natasha@ststor01 /]$ sudo chmod 777 /archives/
[natasha@ststor01 /]$ sudo chown natasha:natasha /archives/
[natasha@ststor01 /]$ ls -la
total 88
dr-xr-xr-x 1 root root 4096 Aug 11 03:46 .
dr-xr-xr-x 1 root root 4096 Aug 11 03:46 ..
-rw-r--r-- 1 root root 0 Aug 11 02:43 .autorelabel
dr-xr-xr-x 2 root root 4096 Jun 25 2024 afs
drwxrwxrwx 2 natasha natasha 4096 Aug 11 03:33 archives
lrwxrwxrwx 1 root root 7 Jun 25 2024 bin -> usr/bin
dr-xr-xr-x 2 root root 4096 Jun 25 2024 boot
drwxr-xr-x 7 root root 460 Aug 11 02:43 dev
-rwxrwxr-x 1 root root 2262 Mar 5 14:49 entrypoint.sh
drwxr-xr-x 1 root root 4096 Aug 11 02:43 etc
drwxr-xr-x 1 root root 4096 Mar 5 14:52 home
lrwxrwxrwx 1 root root 7 Jun 25 2024 lib -> usr/lib
lrwxrwxrwx 1 root root 9 Jun 25 2024 lib64 -> usr/lib64
drwx------ 2 root root 4096 Mar 2 04:13 lost+found
drwxr-xr-x 2 root root 4096 Jun 25 2024 media
drwxr-xr-x 2 root root 4096 Jun 25 2024 mnt
drwxr-xr-x 1 root root 4096 Aug 11 02:43 opt
dr-xr-xr-x 1105 root root 0 Aug 11 02:43 proc
dr-xr-x--- 1 root root 4096 Mar 5 14:50 root
drwxr-xr-x 23 root root 640 Aug 11 02:43 run
lrwxrwxrwx 1 root root 8 Jun 25 2024 sbin -> usr/sbin
drwxr-xr-x 2 root root 4096 Jun 25 2024 srv
dr-xr-xr-x 13 nobody nobody 0 Mar 5 21:37 sys
drwxrwxrwt 12 root root 4096 Aug 11 03:45 tmp
drwxr-xr-x 1 root root 4096 Mar 2 04:13 usr
drwxr-xr-x 1 root root 4096 Aug 11 02:43 var
[natasha@ststor01 /]$ ssh banner@stapp03
The authenticity of host 'stapp03 (10.244.196.58)' can't be established.
ED25519 key fingerprint is SHA256:yEyN8qvzhNxfcKVE+H05zwQPmQMKCXj4JyGWuOP1HIg.
This key is not known by any other names.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added 'stapp03' (ED25519) to the list of known hosts.
banner@stapp03's password:
Last login: Tue Aug 11 03:33:38 2026 from 10.244.195.17
[banner@stapp03 ~]$ cd /
[banner@stapp03 /]$ ls -la
total 92
dr-xr-xr-x 1 root root 4096 Aug 11 03:46 .
dr-xr-xr-x 1 root root 4096 Aug 11 03:46 ..
-rw-r--r-- 1 root root 0 Aug 11 02:44 .autorelabel
dr-xr-xr-x 2 root root 4096 Jun 25 2024 afs
drwxrwxrwx 2 banner banner 4096 Aug 11 03:33 archives
lrwxrwxrwx 1 root root 7 Jun 25 2024 bin -> usr/bin
dr-xr-xr-x 2 root root 4096 Jun 25 2024 boot
drwxr-xr-x 7 root root 460 Aug 11 02:44 dev
-rwxrwxr-x 1 root root 2262 Mar 5 14:49 entrypoint.sh
drwxr-xr-x 1 root root 4096 Aug 11 03:36 etc
drwxr-xr-x 1 root root 4096 Mar 5 14:52 home
lrwxrwxrwx 1 root root 7 Jun 25 2024 lib -> usr/lib
lrwxrwxrwx 1 root root 9 Jun 25 2024 lib64 -> usr/lib64
drwx------ 2 root root 4096 Mar 2 04:13 lost+found
drwxr-xr-x 2 root root 4096 Jun 25 2024 media
drwxr-xr-x 2 root root 4096 Jun 25 2024 mnt
drwxr-xr-x 1 root root 4096 Aug 11 02:44 opt
dr-xr-xr-x 1181 root root 0 Aug 11 02:44 proc
dr-xr-x--- 1 root root 4096 Mar 5 14:50 root
drwxr-xr-x 23 root root 680 Aug 11 02:44 run
lrwxrwxrwx 1 root root 8 Jun 25 2024 sbin -> usr/sbin
drwxrwxrwx 2 banner banner 4096 Aug 11 03:44 scripts
drwxr-xr-x 2 root root 4096 Jun 25 2024 srv
dr-xr-xr-x 13 nobody nobody 0 Mar 16 16:26 sys
drwxrwxrwt 13 root root 4096 Aug 11 03:46 tmp
drwxr-xr-x 1 root root 4096 Mar 2 04:13 usr
drwxr-xr-x 1 root root 4096 Aug 11 02:44 var
[banner@stapp03 /]$ cd scripts/
[banner@stapp03 scripts]$ ./official_archive.sh
[Tue Aug 11 03:47:25 UTC 2026] Starting backup process...
Creating zip archive from /var/www/html/official ...
Copying archive to clint@stbkp01:/archives ...
Error: Failed to copy archive to remote server. Exiting.
[banner@stapp03 scripts]$ sudo nano official_archive.sh
[banner@stapp03 scripts]$ ./official_archive.sh
[Tue Aug 11 03:48:57 UTC 2026] Starting backup process...
Creating zip archive from /var/www/html/official ...
Copying archive to natasha@ststor01:/archives ...
[Tue Aug 11 03:48:57 UTC 2026] Backup completed successfully.
[banner@stapp03 scripts]$ cd ../
[banner@stapp03 /]$ ls
afs boot etc lib64 mnt root scripts tmp
archives dev home lost+found opt run srv usr
bin entrypoint.sh lib media proc sbin sys var
[banner@stapp03 /]$ cd archives/
[banner@stapp03 archives]$ ls
xfusioncorp_official.zip
[banner@stapp03 archives]$ ls -la
total 12
drwxrwxrwx 2 banner banner 4096 Aug 11 03:48 .
dr-xr-xr-x 1 root root 4096 Aug 11 03:48 ..
-rw-r--r-- 1 banner banner 616 Aug 11 03:48 xfusioncorp_official.zip
[banner@stapp03 archives]$ unzip -l /archives/xfusioncorp_official.zip
Archive: /archives/xfusioncorp_official.zip
Length Date Time Name
--------- ---------- ----- ----
0 08-11-2026 03:33 var/www/html/official/
0 08-11-2026 03:33 var/www/html/official/.gitkeep
42 08-11-2026 03:33 var/www/html/official/index.html
--------- -------
42 3 files
[banner@stapp03 archives]$ ssh natasha@stst01
ssh: Could not resolve hostname stst01: Name or service not known
[banner@stapp03 archives]$ ssh natasha@ststor01
Last login: Tue Aug 11 03:45:27 2026 from 10.244.196.58
[natasha@ststor01 ~]$ cd ../
[natasha@ststor01 home]$ cd /
[natasha@ststor01 /]$ cd archives/
[natasha@ststor01 archives]$ ls
xfusioncorp_official.zip
[natasha@ststor01 archives]$ unzip -l /archives/xfusioncorp_official.zip
Archive: /archives/xfusioncorp_official.zip
Length Date Time Name
--------- ---------- ----- ----
0 08-11-2026 03:33 var/www/html/official/
0 08-11-2026 03:33 var/www/html/official/.gitkeep
42 08-11-2026 03:33 var/www/html/official/index.html
--------- -------
42 3 files
[natasha@ststor01 archives]$ ssh banner@stapp03
banner@stapp03's password:
Permission denied, please try again.
banner@stapp03's password:
Last failed login: Tue Aug 11 03:51:27 UTC 2026 from 10.244.244.147 on ssh:notty
There was 1 failed login attempt since the last successful login.
Last login: Tue Aug 11 03:46:57 2026 from 10.244.244.147
[banner@stapp03 ~]$ cd /
[banner@stapp03 /]$ cd scripts/
[banner@stapp03 scripts]$ cat official_archive.sh
#!/bin/bash
# ==============================================
# ecommerce_backup.sh
# Purpose: Backup website ecommerce to local and remote backup server
# ==============================================
# --- Configuration ---
SRC_DIR="/var/www/html/official"
BACKUP_DIR="/archives"
ARCHIVE_NAME="xfusioncorp_official.zip"
REMOTE_USER="natasha"
REMOTE_HOST="ststor01"
REMOTE_DIR="/archives"
# --- Step 1: Create local backup archive ---
echo "[$(date)] Starting backup process..."
echo "Creating zip archive from $SRC_DIR ..."
zip -r "${BACKUP_DIR}/${ARCHIVE_NAME}" "${SRC_DIR}" > /dev/null 2>&1
if [ $? -ne 0 ]; then
echo "Error: Failed to create zip archive. Exiting."
exit 1
fi
# --- Step 2: Copy archive to remote backup server ---
echo "Copying archive to ${REMOTE_USER}@${REMOTE_HOST}:${REMOTE_DIR} ..."
scp "${BACKUP_DIR}/${ARCHIVE_NAME}" "${REMOTE_USER}@${REMOTE_HOST}:${REMOTE_DIR}/" > /dev/null 2>&1
if [ $? -ne 0 ]; then
echo "Error: Failed to copy archive to remote server. Exiting."
exit 2
fi
echo "[$(date)] Backup completed successfully."
exit 0
[banner@stapp03 scripts]$