I have a very large file with more than 500,000 lines of dated events.
The first field contains the date/time in the following format:
20120727-files.files:20120727090044
where the first 8 numbers represent yyyymmdd. The last set of numbers represent yyyy/mm/dd/hh:mm:ss
I would like to change the value of the first field to:
YYYY-MM-DD HH:MM:SS
I have no clue how to do this. I started with displaying the first field only to simplify things.
I've tried to find a cheatsheet for printf but couldn't find anything good. Is printf universal to many languages? Or is printf in bash unique to all....?
Hi Friends,
Can anyone guide me how to compute sum of column4 from the below file x using awk command? when i do using awk I'm getting sum 7482350198352648.000000 which is not accurate.
$ cat x
56,232,dfgjkhdfj,,56,anand
56,22,dfgjkhdfj,7482347823453123.97834 ,56,Khan
56,23,dfgjkhdfj, ... (6 Replies)
Hi,
Does anyone know a easy way to printf $3,$4, ... all the way to the last field in the file? I will need to modify $1 and $2 and then printf modified $1 and $2 and the rest of the fields(which are not changed).
I know I can use NF as the total number of field.
Do I use a for next statement to... (4 Replies)
Hi,
I've got a basic problem using printf statement in awk.
I want to write float values with always 8 characters width.
Examples :
1.345678
12.45678
123.4567
1234.678
-23.5678
-2.45678
-23456.8
.....
I cannot find the right printf format %8.1f, %7.5f....
Can anyone help ?... (4 Replies)
Hi friends..
I am confused about awk printf option..
I have a comma separated file
88562848,21-JAN-08,2741079, -1188,-7433,TESTING
88558314,21-JAN-08,2741189, -1273,-7976,TESTING
and there is a line in my script ( written by someone else)
What is the use of command?
I guess... (10 Replies)
Hi Friends,
Scripting newb here. So I'm trying to create a geektool script that uses awk and printf to output certain fields from top (namely command, cpu%, rsize, pid and time, in that order). After much trial and error, I've pretty much succeeded, with one exception. Any process whose name... (3 Replies)
Target file contains short text (never more than 1 line) and filenames.
The format is, e.g.,:
TEXT1
filename1
TEXT2
TEXT3
filename3dddd
filename3dddd
TEXT4
filename4
TEXT5
filename5dddd
filename5dddd
filename5
where dddd is a random 4-digit whole number.
Desired output: (4 Replies)
Hi,
I am using the following code to assign a count value to a variable. But I get nothing. Do you see anything wrong here.
I am new to all this.
$CTR=`remsh $m -l $MACHINES{$m} -n cat $output | grep -v sent | grep \"$input\" | sort -u | awk '{print $5}'`;
Upto sort - u it's... (2 Replies)
Hello
Here is an easy one
Data file
12345 (tab) Some text (tab) 53.432
23456 (tab) Some longer text (tab) 933.422
34567 (tab) Some different text (tab) 29.309
I need to awk these three tab-delimited columns so that the first two are unchanged (unformatted) and the third shows two decimal... (1 Reply)
Please help me format this file:
Source file looks like this, there are three columns, separated by space. First column has varrying width:
1 248105240 W25_2013
10 248103710 W06_2013
100 248103710 W06_2013
1000 248103710 W06_2013
I need to transform the file into a fixed width per column.... (1 Reply)
Discussion started by: tamahomekarasu
1 Replies
LEARN ABOUT FREEBSD
fmtcheck
FMTCHECK(3) BSD Library Functions Manual FMTCHECK(3)NAME
fmtcheck -- sanitizes user-supplied printf(3)-style format string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdio.h>
const char *
fmtcheck(const char *fmt_suspect, const char *fmt_default);
DESCRIPTION
The fmtcheck() scans fmt_suspect and fmt_default to determine if fmt_suspect will consume the same argument types as fmt_default and to
ensure that fmt_suspect is a valid format string.
The printf(3) family of functions cannot verify the types of arguments that they are passed at run-time. In some cases, like catgets(3), it
is useful or necessary to use a user-supplied format string with no guarantee that the format string matches the specified arguments.
The fmtcheck() was designed to be used in these cases, as in:
printf(fmtcheck(user_format, standard_format), arg1, arg2);
In the check, field widths, fillers, precisions, etc. are ignored (unless the field width or precision is an asterisk '*' instead of a digit
string). Also, any text other than the format specifiers is completely ignored.
RETURN VALUES
If fmt_suspect is a valid format and consumes the same argument types as fmt_default, then the fmtcheck() will return fmt_suspect. Other-
wise, it will return fmt_default.
SEE ALSO printf(3)BUGS
The fmtcheck() function does not recognize positional parameters.
SECURITY CONSIDERATIONS
Note that the formats may be quite different as long as they accept the same arguments. For example, "%p %o %30s %#llx %-10.*e %n" is com-
patible with "This number %lu %d%% and string %s has %qd numbers and %.*g floats (%n)". However, "%o" is not equivalent to "%lx" because the
first requires an integer and the second requires a long.
BSD October 16, 2002 BSD