awk '/--/{getline;if(!int($0)){print s $0}}{s=$1}' {$outputfile}
Can anyone please expain me this line.
Explanation:
If the line contains "--" then get the next line.
If the value of the next line is not 0 print the line before the line with "--"
Assign the line to the variable s, if the current line contains "--" the value is always the line before this line.
Hi
My requirement is to read the contents of a fixed length file and validate the same.
But am not able to read the contents of the file and when i tried it to print i get <blank> as an output...
I used the below satatements for printing the contents
... (3 Replies)
Hi Friends,
I am new to this forum. Just struck up with a logic.
I have a csv file seperated by ":" (colons).
This csv file contains hostname and groups as follows:
HOSTNAME:VT Group
SGSGCT2AVPX001:Team1
SGSGCT2AVPX003:Team2
SGSGCT2AVPX005:Team2
PHMNCTTAVPX001:Team3
I want to... (2 Replies)
Hi,
Need help in writing a script to read the contents of this file test
Test
00a
00b
00c
00d
00e
00f
where it need to read each line to give a display such as
form meta from dev 00a , config=Striped; add dev 00b:00f to meta 00a
Can any one help me in writing this script (2 Replies)
My file is in this format :
username : student information : default shell : student ID
Eg :
joeb:Joe Bennett:/bin/csh:1234
jerryd:Jerry Daniels:/bin/csh:2345
deaverm: Deaver Michelle:/bin/bash:4356
joseyg:Josey Guerra:/bin/bash:8767
michaelh:Michael Hall:/bin/ksh:1547
I have to... (1 Reply)
I have made a script something like this. I want it to read the contents of either file or directory but 'cat' and 'ls' is not working. Can anyone help me? I am a newbie in scripting so dont know much about it. I also dont know how can i put my code separatly on this forum
#!/bin/bash
echo... (9 Replies)
Hi, I'm trying to implement a C program on ubuntu which reads the contents of a file that is passed in as an argument and then displays it to the screen. So far I've cobbled together this from bits online but most of it is probably wrong as its all copied and pasted...
#include <stdio.h>... (2 Replies)
Hi,
I am kind of new at awk programming, so any help would be great !
I am trying to read a date from a file into a variable and a count into another variable and display both these variables.
The file looks like the attached file...
I tried this but it doesn't work ...
... (6 Replies)
Hi,
I am facing issue while reading data from a file in UNIX. my requirement is to compare two files and for the text pattern matching in the 1st file, replace the contents in second file by the contents of first file from start to the end and write the contents to thrid file.
i am able to... (2 Replies)
Hello,
I have a set of files Xfile0001 - Xfile0021, and the content of this files (one at a time) needs to be printed between some line (lines start with word "Generated") that I am extracting from another file called file7.txt and all the output goes into output.txt. First I tried creating a for... (5 Replies)
Trying to use sed to insert the contents of a file into the end of each line in another file
file1
This is a line
Here is another line
This is yet another line
Here is a fourth line
file2
TEXT
desired output
This is a line TEXT
Here is another line TEXT
This is yet another... (6 Replies)
Discussion started by: jimmyf
6 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