10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
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... (4 Replies)
Discussion started by: port43
4 Replies
2. Shell Programming and Scripting
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 =... (4 Replies)
Discussion started by: MetaMan
4 Replies
3. Shell Programming and Scripting
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... (12 Replies)
Discussion started by: yifangt
12 Replies
4. Shell Programming and Scripting
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? (4 Replies)
Discussion started by: sdf
4 Replies
5. Shell Programming and Scripting
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..... (2 Replies)
Discussion started by: Alice236
2 Replies
6. Shell Programming and Scripting
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... (15 Replies)
Discussion started by: jeeplou
15 Replies
7. Shell Programming and Scripting
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.... (1 Reply)
Discussion started by: kristinu
1 Replies
8. Shell Programming and Scripting
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
}'... (1 Reply)
Discussion started by: garethsays
1 Replies
9. Shell Programming and Scripting
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... (9 Replies)
Discussion started by: timj123
9 Replies
10. Shell Programming and Scripting
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... (0 Replies)
Discussion started by: chlawren
0 Replies
GETDELIM(3) BSD Library Functions Manual GETDELIM(3)
NAME
getdelim, getline -- read a delimited record from a stream
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdio.h>
ssize_t
getdelim(char ** restrict lineptr, size_t * restrict n, int delimiter, FILE * restrict stream);
ssize_t
getline(char ** restrict lineptr, size_t * restrict n, FILE * restrict stream);
DESCRIPTION
The getdelim() function reads from the stream until it encounters a character matching delimiter, storing the input in *lineptr. The buffer
is NUL-terminated and includes the delimiter. The delimiter character must be representable as an unsigned char.
If *n is non-zero, then *lineptr must be pre-allocated to at least *n bytes. The buffer should be allocated dynamically; it must be possible
to free(3) *lineptr. getdelim() ensures that *lineptr is large enough to hold the input, updating *n to reflect the new size.
The getline() function is equivalent to getdelim() with delimiter set to the newline character.
RETURN VALUES
The getdelim() and getline() functions return the number of characters read, including the delimiter. If no characters were read and the
stream is at end-of-file, the functions return -1. If an error occurs, the functions return -1 and the global variable errno is set to indi-
cate the error.
The functions do not distinguish between end-of-file and error, and callers must use feof(3) and ferror(3) to determine which occurred.
EXAMPLES
The following code fragment reads lines from a file and writes them to standard output.
char *line = NULL;
size_t linesize = 0;
ssize_t linelen;
while ((linelen = getline(&line, &linesize, fp)) != -1)
fwrite(line, linelen, 1, stdout);
if (ferror(fp))
perror("getline");
ERRORS
[EINVAL] lineptr or n is a NULL pointer.
[EOVERFLOW] More than SSIZE_MAX characters were read without encountering the delimiter.
The getdelim() and getline() functions may also fail and set errno for any of the errors specified in the routines fflush(3), malloc(3),
read(2), stat(2), or realloc(3).
SEE ALSO
ferror(3), fgets(3), fopen(3)
STANDARDS
The getdelim() and getline() functions conform to IEEE Std 1003.1-2008 (``POSIX.1'').
BSD
June 30, 2010 BSD