Shell Scripting
Shell script to monitor if new file is not receive on folder it will give you mail alert
In this post we will get an email alert if the monitor folder have not receiving any files. below …
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Linux
Create Local SSL certificate and configured on Linux Server and file transfers using Linux httpd services
SSL certificate , I think secure shell , it used for make website secure, ssl is a way to secure t…
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RedHat
user are not allowed to use this program crontab on Redhat 8 Servers
# crontab -l //it will listed out all the cron task running under root account, at the same if we …
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Windows
Local DNS hosts setup for Windows servers resolve hostnames
DNS : domain name system usually does resolve the IP address with associated domain with the help o…
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Storage
resize2fs is using to extend the ext4 (x-gvfs) file system on Linux
Work environment : Running redhat linux server which is having two disk sda and sdb /dev/sda has …
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RedHat
DNS cache flush command on Redhat Linux without systemd-resolved.service
DNS flush required when you changed the certain domain name IP address's or Domain names. DNS …
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RedHat
Text based web browser in RHEL 8 instead of curl
From Linux terminal we never get any graphical interfaces all we can see text based output. usual…
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Shell Scripting
Shell script to get local user account list from multiple Linux servers
//save below script as checkstatus.sh #!/bin/bash password="Passw**d" echo "Hostnam…
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Python
ModuleNotFoundError: No module named 'requests'
//here I have an example python code this will hit the side with endless for testing purpose only.…
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Python
python: command not found...Failed to search for file: cannot update repo 'epel-modular': Cannot prepare internal mirrorlist: Curl error (6) bash:
# python -V bash: python: command not found... Failed to search for file: cannot update repo '…
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Proxmox
Add user permission in Proxmox
Create a user # useradd user100 # passwd user100 //password //give your password twice Go to GUI …
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Proxmox
Enable USP in Proxmox VM
#lsusb qm> info usbhost find the USB ports and vendor id and product id # qm set 100 -usb0 host…
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RedHat
disable the /etc/init.d/services on boot in Linux
# chkconfig --list Note: This output shows SysV services only and does not include native sy…
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Linux
user is not in the sudoers file. This incident will be reported.
[boobalan@centos ~]$ sudo su [sudo] password for boobalan: boobalan is not in the sudoers file. Th…
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Linux
disable root account in linux - su: failed to execute /bin/nologin: No such file or directory
// there are 3 ways we can disable root account login from linux 1. disable the root login through…
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Linux
different between normal user and super user umask values in Linux
//umask is mixed with Linux OS to provide security //Default umask for Super user [root@centos ~]# …
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Unix
Which company is authorized to provide Linux file system
History of Linux Let's have detailed look about Linux Multics -> Unix -> Linux In 1965 - …
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Shell Scripting
>/dev/null 2>&1 detailed explain
# crontab -l 5 4 * * * /home/script.sh >/dev/null 2>&1 //explain 2 - standard error 1 - s…
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RedHat
RHEL 6.10 to 7.6 OS upgrade using redhat-upgrade-tool
//Pre-requisites Complete backup has to done before. OS need to be registered with Redhat subscript…
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Linux
Centos to PC connect command
// Check your Linux version #uname -r //then if you have centOS 32 bit # wget http://download.fedor…
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Java
How to run Java RMI program
Remote Method Invocation(RMI) facilitates object function calls between Java Virtual Machines(JVM…
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