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AWK Command in Unix!

Discussion in 'Introductions' started by Adi Sharma, Dec 16, 2019.

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  1. Adi Sharma

    Adi Sharma New Member

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    Hello Everyone, I am looking to awk command in Unix and I know the basic commands like Printing the table line by line, Printing Columns, IF Command, String Operations, Length, Count, For, Non-empty Line, Arithmetic Operations and I want to explore more commands, I have search on google to find awk command in Unix with examples but I can't found some more commands in Unix. If anyone knows more, Please share with me
     
  2. eva2000

    eva2000 Administrator Staff Member

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    welcome @Adi Sharma to Centmin Mod Community. This forum is for community support for Centmin Mod LEMP stack not general Linux help. Though there is this https://community.centminmod.com/threads/understanding-and-using-awk-command.7785/. But you should be able to find awk command tutorials via Google search anyway :)

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  3. Rohan Joshi

    Rohan Joshi New Member

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    1. -F or --: field-separator Input Field Separator (FS)
    2. -f or --: file program file
    3. NR: The total number of input records (Rows)
    4. NF: The total number of fields(columns) in the current input record
    5. -v var=val --assign var=val: Assign the value val to the variable var, before execution of the program begins.
    6. $0: The whole line
    7. $1, $2...$n: Fields from 1 to n.
    8. RS: Record Separator, a newline by default.
    9. OFS: Field separator of the outputted data (default whitespace)
    10. ORS: Record separator of the outputted data (default newline)
    11. index(s,t): Position in string s where string t occurs, 0 if not found
    12. length(s): Length of string s (or $0 if no arg)
    13. int(x): Truncate x to integer value
    14. split(s,a,fs): Split string s into array a split by fs, returning length of a
    15. system(cmd): Execute cmd and return exit status
    16. tolower(s): String s to lowercase
    17. toupper(s): String s to uppercase
    18. BEGIN: Preprocessing (Executes before processing the data)
    19. END: Postprocessing (Executes after processing the data)

    These are only a few commands for more list of commands visit here.