Replace string with multiple files in Multiple directory

grep -rl PM_NOV_2018 | xargs sed -i 's/PM_NOV_2018/PM_OCT_2019/g'

To find biggest file in top 5 in directory linux

How to Find Biggest Files and Directories in Linux

Run the following command to find out top biggest directories under /home partition.

# du -a /home | sort -n -r | head -n 5

Find Largest Directories in Linux

The above command displays the biggest 5 directories of my /home partition.

Find Largest Directories in Linux

If you want to display the biggest directories in the current working directory, run:

# du -a | sort -n -r | head -n 5

Find Biggest Directories Only

Let us break down the command and see what says each parameter.

1. du command: Estimate file space usage.
2. a : Displays all files and folders.
3. sort command : Sort lines of text files.
4. -n : Compare according to string numerical value.
5. -r : Reverse the result of comparisons.
6. head : Output the first part of files.
7. -n : Print the first ‘n’ lines. (In our case, We displayed first 5 lines).

Some of you would like to display the above result in human readable format. i.e you might want to display the largest files in KB, MB, or GB.

# du -hs * | sort -rh | head -5

Find Top Directories Sizes in Linux

The above command will show the top directories, which are eating up more disk space. If you feel that some directories are not important, you can simply delete few sub-directories or delete the entire folder to free up some space.

To display the largest folders/files including the sub-directories, run:

# du -Sh | sort -rh | head -5

Find Largest Folder and Sub directories

Find out the meaning of each options using in above command:

1. du command: Estimate file space usage.
2. -h : Print sizes in human readable format (e.g., 10MB).
3. -S : Do not include size of subdirectories.
4. -s : Display only a total for each argument.
5. sort command : sort lines of text files.
6. -r : Reverse the result of comparisons.
7. -h : Compare human readable numbers (e.g., 2K, 1G).
8. head : Output the first part of files.

Find Out Top File Sizes Only

If you want to display the biggest file sizes only, then run the following command:

find -type f | xargs  -I {} du -h {}

# find -type f -exec du -Sh {} + | sort -rh | head -n 5

Find Top File Sizes in Linux

To find the largest files in a particular location, just include the path besides the find command:

# find /home/tecmint/Downloads/ -type f -exec du -Sh {} + | sort -rh | head -n 5
OR
# find /home/tecmint/Downloads/ -type f -printf "%s %p\n" | sort -rn | head -n 5

idrac CLI

# power server off racadm serveraction powerdown # power server on racadm serveraction powerup # perform server power cycle racadm serveraction powercycle # force hard server power reset racadm serveraction hardreset # display current power status of server racadm serveraction powerstatus

expect ssh to output file

#!/usr/bin/expect -f
set user "root"
set password "toor"
set ip "10.0.0.88"

spawn ssh $user@$ip
expect "password:"
sleep 1
send "$password\r"

expect ">" {send "racadm getsysinfo\r"} >/home/ssh.txt
expect ">" {send "exit\r"}
set output [open "outputfile.txt" "a+"]
set outcome $expect_out(buffer)
puts $output $outcome
close $output
expect EOF

Learning 2019

Learning 2019

https://mega.nz/#F!2EwHWZaL!8KwWy2rYgWojjV0q9UA0hw!HRgiRYCZ

Download MP4 high quality from youtube with Linux

youtube-dl -4 -f bestvideo+bestaudio https://www.youtube.com/watch?v=EeDOw-j_Hhc

Using to crunch generate number password

   13  crunch
   14  crunch --help
   15  man crunch
   16  crunch 10 10 -t 09%%%%%%%% -o /root/09x.txt
   17  ls
   18  zip 09x.txt
   19  zip 09x.txt 09x.txt.zip
   20  zip 09x.txt.zip 09x.txt
   21  crunch 10 10 -t 08%%%%%%%% -o /root/08x.txt
   22  zip 08x.txt.zip 08x.txt
   23  history

ftp put then delete all local files

ncftpput -u admin -p admin -R -DD 192.168.1.3 / /root/testftp_need_delete/

Linux youtube-dl with Playlist

[Download all in Playlist]
youtube-dl --extract-audio --audio-format mp3 --audio-quality 0 -ci https://www.youtube.com/playlist?list=PLtkobr6wagHU67Ajtmmp31UTVcabMByK-
[Download each file]
youtube-dl --extract-audio --audio-format mp3 --audio-quality 0 https://www.youtube.com/watch?v=JGwWNGJdvx8

HOW TO FIX SMALL SCREEN TEAMVIEWER HOST ON RASPBERRY PI????

HOW TO FIX SMALL SCREEN TEAMVIEWER HOST ON RASPBERRY PI???? ++++++++++++++++++++++++++++ FOLLOWING THIS STEP:
1, EDIT config.txt in boot, do sudo nano /boot/config.txt
2, Remove # before: === disable_ovescan === framebuffer_width === framebuffer_height change resolution to 1280x720 Do, Ctrl+O, enter to save.
3, Reboot 4, Waiting and connecting to your Pi with Teamviewer on your PC again. ===========THE BUG was fixed============ ENJOY HAVE A NICE DAY!!!

speedtest-csv

http://www.smartdomotik.com/2015/04/03/how-to-schedule-speedtest-from-linux-server/

[GUIDE] Raspbian Lite with PIXEL/LXDE/XFCE/MATE/i3 GUI

https://www.raspberrypi.org/forums/viewtopic.php?f=66&t=133691

[MKT] Block facebook 25 APR 2017

1. create address list in /ip firewall address list
     1.1 address facebook.com
     1.2 define name Fb
Result :
/ip firewall address-list
add address=facebook.com list=fb

2.  create firewall filter rules
/ip firewall filter
add action=drop chain=forward comment="FW Rule Block FB testing" \
    dst-address-list=fb dst-address-type="" src-address=10.0.0.4
  ***src-addr may be host or network***