Linux Kuriosity

Practical Problem: Suppose if you have multiple files in a server, and you want to check whether files are empty or not.How will you check this ? Solution: #!/bin/bash for j in $(cat file-name.txt) do b=`ssh hostname cat $j | wc -l` if [ "$b" == "0" ] then echo "File is  empty" else  echo "File is not empty" fi  done For more practical problems Please click on below link: URL: https://payhip.com/b/247HD           https://rzp.io/l/jpiSs3L

1. ZIP:   https://www.amazon.com/dp/B08BG3YTPX 2. Uptime:   https://www.amazon.com/dp/B08BG3YTPX 3. SED:   https://www.amazon.com/dp/B08BPDPK2R 4. Uniq:   https://www.amazon.com/dp/B08BTP1R5Q 5. Dmidecode:   https://www.amazon.com/dp/B08BTP1R5Q After going through the above books you are able to use all the options of above commands using shell scripting.

Important Netapp Books for Interview as well as for practical knowledge 1. Url:  https://www.amazon.com/dp/B07NBJT5QS 2. Url:  https://www.amazon.com/dp/B07XZF89HC 3. Url: https://www.amazon.com/dp/B07XQYG9X5 4. Url: https://www.amazon.com/dp/B07NHH4WW5 5. Url: https://www.amazon.com/dp/B07Y8SH8M9

1.Suppose you have multiple servers where a same file exist and you need to get the uniq content only. At this point of time uniq command help you. Solution: #!/bin/bash for i in $(cat hostname.txt) do ssh $i uniq file.txt done If you are looking for more problem like please purchase below book: URL:  https://www.amazon.es/dp/B07NBMY8J6

1. AWS URL:  https://www.amazon.com/dp/B082BDF4VS 2. AWS:Governance & Management URL:  https://www.amazon.com/dp/B0821K7TMJ 3. AWS:Machine Learning URL:  https://www.amazon.com/dp/B081XPXFG6 4. AWS:Identity & Compliance URL:  https://www.amazon.com/dp/B081LCB15B 5. AWS:Devoloper tools URL:  https://www.amazon.com/dp/B081LCB15B All above books help you to crack the DEVOPS-AWS interview.

1. Web Development:WEBRTC&GULP URL:  https://www.amazon.com/dp/B07ZX596XJ 2. Web Development:LESS URL:  https://www.amazon.com/dp/B081B6BP66 3. Web Development:Angular URL:  https://www.amazon.com/dp/B07NPLFYLW 4. Cyber Security & Database security URL: https://www.amazon.com/dp/B07STJ5H8Q 5. Digital Security URL:  https://www.amazon.com/dp/B088PYBRSS    

1. Programming URL:  https://www.amazon.com/dp/B07LB64LJP 2. Docker & Kubernetes URL: https://www.amazon.com/dp/B07LH4D89R 3. AWS URL:  https://www.amazon.com/dp/B08266RTYC 4. Netapp URL:  https://www.amazon.com/dp/B07NBJT5QS 5. Database URL:  https://www.amazon.com/dp/B07LFDY87F All above books will help you to crack the Technical Interview.