script to compress any photo format

Writter: Anuj Borah
Email: anujborah1@gmail.com 



script that will compress any photo with any format like .jpeg , .jpg , .png etc up to 100% . say if you have a picture of 3 mb , with this script you can compress it till 1 kb . with no degradation of quality.

#!/bin/bash
su -c 'yum install ImageMagick'

echo 'please provide the location of image file 'example ---  /home/anuj/image/anuj.jpg''
read a
echo 'please let me know how much percentage you want to compress -- 'ex- like 50%  etc''
read b
convert $a -resize $b image_new0.jpg
clear
echo 'if you want to compress more photo , run this script again'
echo ":) . Thanks have a nice day !! see u on facebook `firefox https://m.facebook.com/Mr.Anuj2223`"

how to recover linux system after /etc file got curruped

writer - anuj borah

email- anujborah1@gmail.com

recently my Ubuntu system got crashed it was not booting . my this post will show you how to recover your Linux system after a file in /etc got damaged or mis configured.


how to recover linux installed system after /etc/fstab ,  /etc/nsswitch.conf  etc any file in /etc got damaged or mis configured .


you will be needing a boot able usb which can format your system  but here format is not a option . as a lots of stuff are there in download folder and a lots  of software are installed in your server . so format is not a option .


now i have faced the situation where i have my pc got /etc/nsswitch.conf got mis  configured as i was doing an experiment on ldap server . after shutdown it was not booting once again . i dont have a bootable ubuntu usb and i dont have any iso file through i can make bootable ubuntu usb .


i just turn on the power button of my pc , boot loader loaded , go for advance option , go for the recovery mode . you will get a shell . try to replace the /etc/nsswitch.conf  file but it show read only  file system cant change . here u can just mount the drives and make a boot able  usb copy of ubuntu .


now boot your pc with boot able usb . you will go for try ubuntu option . then

sudo su
fdisk -l

you will get the drive where the previous corrupted ubuntu was installed .
 mount it to any folder say it is /media/anuj


now

chroot /media/anuj

go for the /etc and repace nsswitch.conf file with old backed up file . dats it .

see my bellow pic how was it my pc ..

 

Make password less ssh (script for passwordless ssh)

Make pass wordless ssh (script for password less ssh)


Writter: Anuj Borah
Email: anujborah1@gmail.com



#!/bin/bash
echo "Welcome!!! I am gonna make some passwordless ssh connection ...  coz i dont like passwords"
clear
echo "Gime me the ip of remote server u wana make password less ....."
read w
echo "Now givw me the any existing user of remote server ....."
read e
clear
echo "I will make sure that ur info is correct ....  "
ssh $e@$w mkdir -p .ssh
clear
echo "Now i gonna start my work ...  here u need to press "Enter" only when ask ..........."
ssh-keygen -t rsa
cd
cd .ssh
clear
echo "Just put the info (username and password) for the last time ...."
scp id_rsa.pub $e@$w:/home/$e/.ssh/authorized_keys
clear
echo "checking the passwordless connectivity.....Type "exit""
ssh $e@$w
clear
echo ":) . Thanks have a nice day !! see u on facebook `firefox https://m.facebook.com/Mr.Anuj2223`"

exit

how to share any folder of your pc over ftp or vsftp

How to share any folder of your PC over ftp or vs-ftp

say i need to  share /media/usb5/ftp folder over ftp ...

Follow the following steps:

As we know The default location on ftp is /home/user/.


* mkdir /media/usb5/ftp

now see when u do "ftp ip-of-ur-pc" from a another pc , u will have /home/user/ as default location .  so we will go  as follow.

* mount --bind /media/usb5/ftp /home/user/

and

* service vsftpd restart

dats all

put all the file u want to share over ftp on /media/usb5/ftp folder with proper
permission .

If u want to default location back ,

* umount /media/usb5/ftp

Writer: Anuj Borah
Email: anujborah1@gmail.com

solution for fstab wrongly configured

solution for  fstab wrongly configured .


Some day before i have faced a problem /etc/fstab wrongly configuration .
System was not booting .  I have tried with normal commands to edit the fstab file , but it was write protected. Finely i have got solution .  

Solution : It will work any of the version of linux .  ( Redhat , centos, fedora, ubuntu , debian etc)

(Well its not a script )




Give the root password .

type

mount -n -o remount,  rw /

and now you can edit the /etc/fstab file with vi editor .


dats all . :)


Name: Anuj Borah
Email: anujborah1@gmail.com