Translate (tr) Command: -

Q) How to suppress multiple spaces present inside the below content of file f1 ?

Hi Ram   you are     there

    You are      good     bad 

Ans - $ cat f1 | tr –s ‘<One Space> ‘<Enter – Key>

Output –

Hi Ram you are there

 You are good bad

Q) How to suppress multiple t letter into single t present inside the below content of file f2 ?

Hi Ram yttttt are goodtttt ttt

Tttyou are ttt good

Ans - $ cat f2 | tr –s ‘t’<Enter – Key>

Output –

Hi Ram yt are goodt t

Ttyou are t good

Q) How to convert a word ‘apple’ to ‘APPLE’ ?

Ans – echo ‘apple’ | tr [a-z] [A-Z]<Enter – Key>

Q) How to convert a word ‘SMITH’ to lower case ?

Ans - $ echo ‘SMITH’ | tr [A-Z] [a-z]<Enter – Key>

Q) I am a good boy – Input

Output should be –

I

am

a

good

boy

Ans - $ echo ‘I am a good boy’ | tr –s ‘<One Space> ‘ ‘\n’<Enter – Key>

Q) Input –

I

am

a

boy

Output – I am a boy

Ans – echo ‘i

am

a

boy’ | tr –s ‘\n’ ‘<One Space>’<Enter – Key>

Q) Find the 37^th word of a space separated file f1 ?

Ans - $ cat f1 | tr –s ‘ ‘ ‘\n’ | sed –n ‘37p’<Enter – Key>

tee Command: -

Q) Which command will show the output in screen and also saves the output in a file ?

Ans – tee command

Example –

$ ls –lrt | tee f1<Enter – Key>

This Command will show the output of ls –lrt in the screen and saves the output in a file f1.

Q) How to create multiple files with same content ?

Ans - $ tee file1 file2 file3 file4 ….<Enter – Key>

Content

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