Please use code tags when posting i/output or code.
Your awk command is almost correct, you were really close, just add print:
Or, with getline and no variable:
Or, with getline reading into a variable instead of $0:
If the match is on the very end of file, solution 2 will print duplicates, and solution 3 will print empty lines. To treat this, you could check for the return value of getline.
Last edited by mirni; 02-03-2012 at 05:26 AM..
Reason: eof treatment
Hello,
How do I use grep to find a pattern in a list of file and then display 5 lines after the pattern is matched
Eg:
I want to match the string GetPresentCode in all files in a folder and then see 4 lines following this match. I am not sure if grep is what should be used to achieve. Thanks!... (3 Replies)
I have a file like this
DoctorName
Address1
Address2
DOB
InsuredName
Address1
Address2
DOB
PatientName
Address1
Address2
DOB
ClaimNo1
DoctorName
Address1
Address2
DOB
InsuredName (2 Replies)
I have a file which has collection of segments occuring n(For eg.100) times
ISA
GS
ST
NM1*85
N3
N4
NM1*IL
N3
N4
REF*D9*1001
ISE
GE
SE
ISA
GS
ST
NM1*85
N3 (13 Replies)
Hi All,
I need to get the count of records in the file, if the passing parameter matches with the list of records in the file. Below is my example
source file: Test1.dat
20120913
20120913
20120912
20120912
20120912
20120912
20120912
20120913
20120913
20120912
In my script I am... (5 Replies)
Hi,
Need help to grep the following from a file x. I just want to grep exact match not lines and not partial word.
CONFSUCCESS
CONFFAIL
CONFPARTIALSUCCESS
>cat x
xczxczxczc zczczcxx CONFSUCCESS czczczcczc
czxxczxzxczcczc CONFFAIL xczxczcxcczczc
zczczczcz CONFPARTIALSUCCESS czczxcxzc
... (4 Replies)
URGENT HELP IS NEEDED!!
I am looking to move matching lines (01 - 07) from File1 and 77 tab the matching string from File2, to File3.txt. I am almost done but
- Currently, script is not printing lines to File3.txt in order.
- Also the matching lines are not moving out of File1.txt
... (1 Reply)
Hello,
I have a file contains two columns. I need to print the lines after “xxx” so i'm trying to match "xxx" & cut the lines after that. I'm trying with the grep & cut command, if there any simple way to extract this please help me.
Sample file :
name id
AAA 123
AAB 124
AAC 125... (4 Replies)
The below bash connects to a site, downloads a file, searches that file based of user input - could be multiple (all that seems to work). What I am not able to figure out is how to display on the screen match found or no match found" and write a file to a directory (C:\Users\cmccabe\Desktop\wget)... (4 Replies)
Trying to combine the matching $5 values between file1 and file2. If a match is found then the last $6 value in the match and the sum of $7 are outputted to a new file. The awk below I hope is a good start. Thank you :).
file1
chr12 9221325 9221448 chr12:9221325-9221448 A2M 1... (5 Replies)
Discussion started by: cmccabe
5 Replies
LEARN ABOUT MOJAVE
getline
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