To see the disk usage of an Amazon S3 bucket, do the following 1) Click on the bucket name 2) Click on Metrics 3) On Next Page, you will see S3 bucket disk usage. In this case, the bucket size is 39.3 MB. To find disk usage using awscli, run
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aws s3 ls s3://BUCKET_NAME_HERE --recursive --human-readable --summarize |
See Amazon S3 […]
cut is a Linux command that can be used to cut a line of text with a specific delimiter. I want to cut lines separated by multiple spaces like Since the fields are separated by multiple spaces, I can’t just use cut -d’ ‘ command. What you can do is combine multiple spaces into one […]
Webuzo hosting control panel has the option for selecting web servers Apache or Nginx. On a server using Nginx, after uploading the WordPress site and restoring the database, the website home page worked. When I clicked on any web page, I get a 404 Page not found error. To fix this, you need to add […]
rdesktop is an open-source client for connecting to windows using Windows Remote Desktop Services. To install rdesktop on CentOS/Fedora run
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yum install rdesktop |
To install rdesktop on Ubuntu/Debian servers, run
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apt install rdesktop |
To connect a server with rdesktop
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rdesktop -u administrator SERVER_IP |
[…]
sshpass is used to non interactively log in to remote SSH server and execute commands. It can use a password from a file, environment variable, or from a command-line argument. To install sshpass on RHEL/CentOS, run
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yum install sshpass |
On Debian/Ubuntu
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apt install sshpass |
Example
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boby@sok-01:~$ sshpass ssh -o StrictHostKeyChecking=no -p 3333 root@ok.serverok.in "uptime" 02:16:14 up 470 days, 10:41, 0 users, load average: 0.07, 0.04, 0.04 boby@sok-01:~$ |
Take MySQL backup on a remote server
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sshpass ssh -o StrictHostKeyChecking=no -p 3333 root@ok.serverok.in "mysqldump serverok_wp > /root/serverok_wp.sql" |
Command-line options for sshpass are […]
basic server utils Cpanel Server Setup […]
On CentOS/RHEL
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yum update yum upgrade -y yum -y remove mlocate yum install -y nmap lynx wget curl telnet jwhois yum install -y atop iotop yum install -y strace yum install -y git yum install -y sysstat yum install -y vim yum install -y tmux yum install -y ncurses-devel automake autoconf gcc gmake patch make yum install -y libcpp libgcc libstdc++ gcc4 gcc4-c++ gcc4-gfortran yum install -y dos2unix libtool gcc-c++ gcc-c++ compat-gcc-32 compat-gcc-32-c++ |
For non cpanel server, install epel See Server Setup […]
First C Program […]
To create your first C Program, open any text editor, copy and paste the following code
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#include <stdio.h> int main() { printf ("Tis is my C program"); } |
Save it as hello.c Before you can run this program, you need to compile it. To compile run
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gcc -o hello hello.c |
Make the program executable with
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chmod 755 hello |
To run
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./hello |
[…]
To see the current mail server setup on the Cpanel server, run
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[root@server78 ~]# /scripts/setupmailserver --current Current mailserver type: dovecot Current storage format: maildir or mdbox [root@server78 ~]# |
Cpanel Provide Following Mail servers
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SMTP: <a href="https://serverok.in/exim">exim</a> POP/IMAP: courier, dovecot |
Roundcube mail logs in Cpanel
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tail -f /var/cpanel/roundcube/log/errors |
See exim mail server, Cpanel Server […]