I have been reading through the sed one liners, trying to understand what is happening.
# delete the last 2 lines of a file
sed 'N;$!P;$!D;$d'
The above will delete the last 2 line of a file. I tried analyzing what happens. And I got lost :(
This is what I understood so far from the... (2 Replies)
First of all, I know this can be more eassily done with perl or other scripting languages but, that's not the issue. I need this in sed. (or wander if it's possible )
I got a file (trace file to recreate the control file from oracle for the dba boys)
which contains
some lines
another line... (11 Replies)
Hi,
I'm very new to Sed and I have a very large file that contains data in the following way
(*064) 1 4 10
(*064) simulation time = 0.12000E-05
(*064) 1 2 10
(*064) 1 3 10Essentially what I want to do it delete every line that starts with
'(*064) 1'I tried the following,
... (2 Replies)
Hi,
I would like to delete lines in /etc/hosts on few workstations, basically I want to delete all the lines for a list of machines like this :
for HOST in $(cat stations.lst |uniq)
do
# echo -n "$HOST"
if ping -c 1 $HOST > /dev/null 2>&1
then
HOSTNAME_val=`rsh $HOST "sed... (3 Replies)
Sample file:
This is line one,
this is another line,
this is the PRIMARY INDEX line
l ;
This is another line
The command should find the line with “PRIMARY INDEX” and remove the last character from the line preceding it (in this case , comma) and remove the first character from the line... (5 Replies)
Hi
I need to delete lines from a file which are after pattern1 and between pattern 2 and patter3, as below:
aaaaaaaa
bbbbbbbb
pattern1
cdededed
ddededed
pattern2
fefefefe <-----Delete this line
efefefef <-----Delete this line
pattern3
adsffdsd
huaserew
Please can you suggest... (6 Replies)
Hi friends,
This is sed & awk type question.
I have a text file which has numbers spread all over the file. I want to sum the series of numbers whenever i find it and produce an output file with the sum. For example
###start of input text file ####
abc
def
ghi
1
2
3
4
kjld
random... (3 Replies)
Hi Members,
This is my first post in this forum.
I want to do is match form feed lines one by one in a file and delete the next n lines (ex-3 lines) with the form feed character
Eg - Files looks like
Data 1
Data 2
Data 3
FF
Hdr1
Hdr2
Hdr3
Data4
Data5
FF
Hdr1
Hdr2
Hdr3 (9 Replies)
Hi Guys
I am looking for a solution to one problem to remove parentheses in a range of lines.
Input file
module bist_logic_inst(a, ab , dhd, dhdh , djdj, hdh, djjd, jdj, dhd, dhp, dk
);
input a;
input ab;
input dhd;
input djdj;
input dhd;
output hdh;
output djjd;
output jdj;... (5 Replies)
Discussion started by: kshitij
5 Replies
LEARN ABOUT PHP
socket_write
SOCKET_WRITE(3) 1 SOCKET_WRITE(3)socket_write - Write to a socketSYNOPSIS
int socket_write (resource $socket, string $buffer, [int $length])
DESCRIPTION
The function socket_write(3) writes to the $socket from the given $buffer.
PARAMETERS
o $socket
-
o $buffer
- The buffer to be written.
o $length
- The optional parameter $length can specify an alternate length of bytes written to the socket. If this length is greater than
the buffer length, it is silently truncated to the length of the buffer.
RETURN VALUES
Returns the number of bytes successfully written to the socket or FALSE on failure. The error code can be retrieved with
socket_last_error(3). This code may be passed to socket_strerror(3) to get a textual explanation of the error.
Note
It is perfectly valid for socket_write(3) to return zero which means no bytes have been written. Be sure to use the === operator to
check for FALSE in case of an error.
NOTES
Note
socket_write(3) does not necessarily write all bytes from the given buffer. It's valid that, depending on the network buffers etc.,
only a certain amount of data, even one byte, is written though your buffer is greater. You have to watch out so you don't uninten-
tionally forget to transmit the rest of your data.
SEE ALSO socket_accept(3), socket_bind(3), socket_connect(3), socket_listen(3), socket_read(3), socket_strerror(3).
PHP Documentation Group SOCKET_WRITE(3)