Day_10 | AWS DevOps 90 Days course | Linux | Nagireddy | VTechnologies

Briefly explain about "head", "tail" and "wc" commands.
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[@Nagamallesh63]

head error. log typing sir but it can showing no such file or directory

[@VTechnologies4u]

Can i have log please

[@rajsekhargude8158]

Sir a quick Doubt, I need top 20 line of error log along with line numbers , head -n -20 error.log , but not working, does head and tail cmds support -n linenumber while displaying data
i am able to achive the same with cat -n error.log | head -20

[@VTechnologies4u]

Use below command
$ head -n 20 filename | nl

[@rajsekhargude8158]

This Training is very nice sir.....Very useful Training...I have no words....Many Thanks SIR.

[@VTechnologies4u]

My Pleasure brother

[@naiduaravind6128]

Head or tail command use chesukoni middle lines find out cheyalema anna

[@VTechnologies4u]

Check the video properly. We tried already

[@universal4334]

You can use pipe and get whatever you want. Let's say you need line 100 from file x, do cat x| head -100| tail -1

[@VTechnologies4u]

@@universal4334 Yes, Nice

[@rajsekhargude8158]

use | to combine 2 or more cmds ....eg if file has 50 lines
to display line no 11 to 20
cat -n error.log | head -20 | tail -10

[@rajsekhargude8158]

i have completed this video training..Thank u SIR

[@VTechnologies4u]

Excellent