awk getline t file

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk with if, getline, and another if

Howdy Folks, It seems like it is always awk that confuses the heck out of me and I even have books and examples. I have this line: awk '{if (/clientIP/)(SRV = $NF); if ($2 ~ /BUNDLE-GIM/) getline; if ($2 ~ /r100595/) {print SRV,"BUNDLE-GIM",$2}}' post.txt to parse this text: <api...

2. Shell Programming and Scripting

awk getline

Hi, I have an awk script with the following function in it . function cmd( c ) { while( ( c | getline foo) > 0 ){ return foo ; close( c ); } } c =...

3. Shell Programming and Scripting

awk getline problem

Hello, I want to print out the DNA sequence entries (tens of thousand!) that are longer than certain value (i=200) from a file (FASTA file) as: >S94D_ctg_8004 Average coverage: 402.95 ATAATGCCTGTGAATATGACATGTGTTCCTGTTTCTACATCAGACTACTATTCTTGCATA...

4. Shell Programming and Scripting

awk print header as text from separate file with getline

I would like to print the output beginning with a header from a seperate file like this: awk 'BEGIN{FS="_";print ((getline < "header.txt")>0)} { if (! ($0 ~ /EL/ ) print }" input.txtWhat am i doing wrong?

5. Shell Programming and Scripting

awk - getline from parametric file name

Hi! I have an input file for an awk script that I need to split into several files and the process them separately line by line. I have splitted the input file into the other files, that have been created correctly. But, since their names are parametric (i.e. output_1.txt, output_2.txt.....

6. Shell Programming and Scripting

Some Awk Getline help?

Greetings, I have about 3000 files that I want to search. The first column in all of these 3000 files has a unique serial number on each line. The subsequent columns have lots of data. I have another masterfile with three columns to help me find all the data I need in a moments notice: col 1...

7. Shell Programming and Scripting

Using getline in awk

I am using awk and want to use getline from a file like below getline x < file However file consists of two columns and I only want to store $2 Any way I can do this? ---------- Post updated at 06:54 AM ---------- Previous update was at 06:45 AM ---------- Done something like this....

8. Shell Programming and Scripting

awk getline

How do you make the getline function return to the original line? The example below should make it clear where I am currently going wrong. Thanks AWK SCRIPT: ------------- awk -F '-' '{ tmpLine = "EMPTY" print "CURRENT LINE :"$0 getline tmpLine print "NEXT LINE :"tmpLine }'...

9. Shell Programming and Scripting

acessing awk array element while getline < "file"

I am attempting to write a awk script that reads in a file after awk array elements are assigned and using those elements while reading in the new file. Does this make sense? /pattern/ {tst=$3} (( getline < "file" ) > 0 ) { x=x " "tst } When I print tst in the END statement it...

10. Shell Programming and Scripting

awk getline help maybe?

hello collegues, I am attempting to use awk to search file1 (serverlist.csv) from each row with file2 (supported.txt). If the is no entry exists in serverlist then output to a file called notsupp.out if there is an entry output to supp.out I can do this with basic shell scripting however...

LEARN ABOUT MOJAVE

getdelim

GETLINE(3)						   BSD Library Functions Manual 						GETLINE(3)

NAME

     getdelim, getline -- get a line from a stream

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <stdio.h>

     ssize_t
     getdelim(char ** restrict linep, size_t * restrict linecapp, int delimiter, FILE * restrict stream);

     ssize_t
     getline(char ** restrict linep, size_t * restrict linecapp, FILE * restrict stream);

DESCRIPTION

     The getdelim() function reads a line from stream, delimited by the character delimiter.  The getline() function is equivalent to getdelim()
     with the newline character as the delimiter.  The delimiter character is included as part of the line, unless the end of the file is reached.

     The caller may provide a pointer to a malloced buffer for the line in *linep, and the capacity of that buffer in *linecapp.  These functions
     expand the buffer as needed, as if via realloc().	If linep points to a NULL pointer, a new buffer will be allocated.  In either case, *linep
     and *linecapp will be updated accordingly.

RETURN VALUES

     The getdelim() and getline() functions return the number of characters written, excluding the terminating NUL character.  The value -1 is
     returned if an error occurs, or if end-of-file is reached.

EXAMPLES

     The following code fragment reads lines from a file and writes them to standard output.  The fwrite() function is used in case the line con-
     tains embedded NUL characters.

	   char *line = NULL;
	   size_t linecap = 0;
	   ssize_t linelen;
	   while ((linelen = getline(&line, &linecap, fp)) > 0)
		   fwrite(line, linelen, 1, stdout);

ERRORS

     These functions may fail if:

     [EINVAL]		Either linep or linecapp is NULL.

     [EOVERFLOW]	No delimiter was found in the first SSIZE_MAX characters.

     These functions may also fail due to any of the errors specified for fgets() and malloc().

SEE ALSO

     fgetln(3), fgets(3), malloc(3)

STANDARDS

     The getdelim() and getline() functions conform to IEEE Std 1003.1-2008 (``POSIX.1'').

HISTORY

     These routines first appeared in FreeBSD 8.0.

BUGS

     There are no wide character versions of getdelim() or getline().

BSD
								 November 30, 2010							       BSD

Shell Programming and Scripting