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printf @ bash

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alxTools answered on March 24, 2021 Popularity 10/10 Helpfulness 4/10

answer printf @ bash

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printf @ bash

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printf "My brother %s is %d years old.\n" Prakash 21

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Source: linuxhandbook.com

Tags: bash printf shell

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Contributed on Dec 30 2021

alxTools

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printf in bash

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printf "$your_var1 $your_var2 $(tail -n -1 your.log | grep Word_to_grep ) \n" >> ../opt_done.txt 

# several things, 
# printf with \n new line
# $(tail -n -1 your.log | grep Word_to_grep )  --> is a command, will output whats comes in terminal
			(if final line of the document has "Normal" to grep it will grep, oherwise nothing 
# $your_var1 $your_var2 variables
# >> this is an appending,

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Source: Grepper

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Contributed on Mar 24 2021

Niransha

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printf linux

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#cat file.txt
#1.11135 -66.8286 0.382867 24.6386 0.693014 175.409 0.763907 -97.6113

cat file.txt | awk '{printf "%-5s%-10s%8s%10s\n","A",$1,$2,"-1.0"}'
	                           ^%-5start from left, keep 5 digit space to right					
                                	  ^%8 start from right, keep 8 digit space to letf
output : 
 1    1.11135   -66.8286      -1.0
#123451234567890123456781234567890

%s	a string of characters
%c	character
%d	decimal (integer) number (base 10)
%e	exponential floating-point number
%f	floating-point number
%i	integer (base 10)
%%	print a percent sign
\%	print a percent sign


#advacne version of this, with many new lines, 

cat file.txt | awk '{printf "%-5s%-10s%8s%10s\n%-5s%-10s%8s%10s\n","A",$1,$2,"-1.0","B",$3,$4,"-2.0"}'
							 ------------------^repeat								

var=0.00
awk '{printf "%4s%7.0f%3s%6s%2s%4.0f%12.3f%8.3f%8.3f%6.2f%7.2f\n", $1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $var}' < a.pdb >> dest.pdb

sort -nk2 clus_vs_pupulation.dat | tac | head -n 20 | awk -v tot=$total '{s++; printf("%-11s%2.2f%1s\n", $1,($2*100/tot),"%" )}'

more https://alvinalexander.com/programming/printf-format-cheat-sheet/

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Source: Grepper

Tags: format fo

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Contributed on Aug 11 2022

Niransha

0 Answers Avg Quality 2/10

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