Do somebody have idea How to sort standard input without first line which in my case it's header
Example:
Cnt|VT |STAT|Date |Time |From |Alert Message |Instance |
125| | | 260308 |160026 |ZAMUAT2|ifpollq... (8 Replies)
Hello,
I have a header which I have to add to a sorted file, however if I use
cat header sortedfile > newfile, the operation takes 2 minutes as the sorted file is over 400mb.
I have noticed that when I sort the 400mb unsorted file, this only takes 14 seconds to create the output.
As... (2 Replies)
Hi,
I'm ssh'ing into a server using ruby and sending a one-liner to retrieve the output of the 'ps aux' command. So far, this is what I have:
ps aux | sort -r -n -k3 | sed -e '1s/^/this is first\n/' | head -n10
With this I can insert a line at position 1, but I would rather extract the... (3 Replies)
Hi,
I have a file with a header line, followed by some contents. How can I sort the file according to header lines?
eg.
/* abcd_005*/
a
bc
/* abcd_001*/
d
e
/* abcd_002*/
x
y
desired output:
/*abcd_001*/ (0 Replies)
I am having report file with header and footer . The details in between header and footer are separated by a pipe charater. I want to sort the file by considering multiple columns in between header and footer.
pls help (4 Replies)
How to sort a tab delimited file first on col1 and then on col2. Also I need to keep the header intact.
file.txt
val1 val2 val3 val4
a b c d
m n o p
e f g h
i j k l
... (3 Replies)
I have several las files with a header and each file start Version and text and before the data starts end up with ~Ascii, then the numbers starts:
-------------------------------------------------------------------------
Code:
~Version
.....text....
~Ascii
2 abc 230 1 name
1 abc ... (1 Reply)
I have several las files with a header and each file start Version and text and before the data starts end up with ~Ascii, then the numbers starts:
-------------------------------------------------------------------------
~Version
.....text....
~Ascii
2 abc 230 1 name
1 abc 400 1... (17 Replies)
Hi,
I am using SUN SOLARIS (SunOS sun4v sparc SUNW, T5240).
I have a huge data file with header and trailer. This file gets used into an ETL process. ETL skips the header record (which is the first record of the file) and loads the rest of the record. The file can be delimited (comma,... (5 Replies)
Hi ,
My UNIX system is SUN Solaris.
I am trying to do a simple thing as described below.
I have a PIPE delimited file that has header and trailer. So the file is something like below:
Test1.txt looks like something below:
field_data1|field_data2|and some more data --Header
... (5 Replies)
Discussion started by: Saanvi1
5 Replies
LEARN ABOUT FREEBSD
snp
SNP(4) BSD Kernel Interfaces Manual SNP(4)NAME
snp -- tty snoop interface
SYNOPSIS
#include <sys/snoop.h>
int
ioctl(fd, SNPSTTY, &dev);
int
ioctl(fd, SNPGTTY, &dev);
int
ioctl(fd, FIONREAD, &result);
DESCRIPTION
/dev/snp is a snoop device which allows users to attach to any tty and watch activities on it. The kernel must be compiled with device snp,
or the snp module must be loaded, for these devices to be available.
To associate a given snp device with a tty to be observed, open the snp device and a tty device, and then issue the SNPSTTY ioctl on snp
device. The argument passed to the ioctl(2) is the address of a variable of type int, holding the file descriptor of a tty device. To
detach the snp device from a tty use a pointer to a value of -1.
The SNPGTTY ioctl returns information about the current tty attached to the open snp device.
The FIONREAD ioctl returns a positive value equal to the number of characters in a read buffer. Special values defined are:
SNP_OFLOW device overflow occurred, device detached.
SNP_TTYCLOSE tty not attached.
SNP_DETACH snp device has been detached by user or tty device has been closed and detached.
SEE ALSO pty(4), sio(4), kldload(8), watch(8)HISTORY
The snp device first appeared in FreeBSD 2.1. In FreeBSD 8.0 the snp driver was rewritten to work with the replaced TTY subsystem.
AUTHORS
The author of the current implementation is Ed Schouten <ed@FreeBSD.org>. Previous versions of snp were based on code written by Ugen J.S.
Antsilevich <ugen@NetVision.net.il>.
BUGS
This version of snp does not return proper error codes when calling FIONREAD. It also does not allow SNPSTTY to detach itself from the TTY.
BSD November 5, 2008 BSD