Command in script

awk '{print >> ( $3 ".txt")}' filename

Input file

sample_text1 text3 20190426

sample_text2 text4 20190426

text1 abc 20190425

text2 def 20190425

generated output's (20190426.txt and 20190425.txt)

20190426.txt

sample_text1 text3 20190426

sample_text2 text4 20190426

20190425.txt

text1 abc 20190425

text2 def 20190425

You can change print to print $1 – steeldriver Apr 27 '19 at 1:41

i want to create output file based on third fields but in output can we have only $1 – upkar Apr 27 '19 at 1:42    

Got the answer now. As the 3rd field holds the essential part of the target file name, the latter is contructed from it and then used for the redirection of the print statement, which by default prints $0, the entire input line