sub(/ ~/,"");
Remove'~' and all following spaces (replaced by empty sting "").
($0~/\|$/?ORS:"")
If the input line ends with '|' then the value of the expression ORS, else the value is an empty string.
ORS is a variable that contains the Output Record Separator that is used par awk when printing data to stdout (with print statement); The default value of ORS is '\n'.
printf $0 ($0~/\|$/?ORS:"")
Displays the input line, followed by a new line (ORS) if ending with '|'.
The 3 commands are varitions a the same technique.
please explain this awk '{print \$NF}'
i have a command
grep -i adding /logs/eap | grep -iv equation | awk '{print \$NF}' | sort -u | sed 's/\.\$//' >> /temp/t
please explain the above awk and sed
as well how it works
and also what is \$NF (1 Reply)
Hi frnds,
one my frnds has given resolution for my problem as below. it working great , but i couldnt understand somethings in the script.
Why ++ operator after the function calling. how these each block working. will each run for each input line sequencially or one block for all the lines... (9 Replies)
awk '!_++'
Most importantly, I want to know what the underscore does "!_"
But ideally, please breakdown the whole thing. It is supposed to remove duplicate lines when found in a file. (1 Reply)
Hi Guys,
Please help me, I am new to programming and I don’t understand what some parts of this code are doing. I have comments on the parts I know, please help if my understanding of the code is not correct and also help with parts with questions.
awk '
{
gsub( ">",... (1 Reply)
Dear all ,
Can any people explain this awk command?
What is the purpose of if (v++){b=$i;$i=""}?
awk -F, '{for (i=1;i<=NF;i++){if (v++){b=$i;$i=""}};print $0} END { print "dups are" ;for ( i in b) print i}' OFS="," input_file
This script is used to replace column duplicate value
... (1 Reply)
found this handy one liner in another thread which is closed, it does what i need but im trying to understand it. it basically matches the field that contains the value v and prints its position
awk -F, '{for(i=1;i<=NF;i++)if($i==v)print i}' v=yourfield inputfile
my understanding is assign... (3 Replies)
SSL_CTX_new(3SSL) OpenSSL SSL_CTX_new(3SSL)NAME
SSL_CTX_new - create a new SSL_CTX object as framework for TLS/SSL enabled functions
SYNOPSIS
#include <openssl/ssl.h>
SSL_CTX *SSL_CTX_new(const SSL_METHOD *method);
DESCRIPTION
SSL_CTX_new() creates a new SSL_CTX object as framework to establish TLS/SSL enabled connections.
NOTES
The SSL_CTX object uses method as connection method. The methods exist in a generic type (for client and server use), a server only type,
and a client only type. method can be of the following types:
SSLv2_method(void), SSLv2_server_method(void), SSLv2_client_method(void)
A TLS/SSL connection established with these methods will only understand the SSLv2 protocol. A client will send out SSLv2 client hello
messages and will also indicate that it only understand SSLv2. A server will only understand SSLv2 client hello messages.
SSLv3_method(void), SSLv3_server_method(void), SSLv3_client_method(void)
A TLS/SSL connection established with these methods will only understand the SSLv3 protocol. A client will send out SSLv3 client hello
messages and will indicate that it only understands SSLv3. A server will only understand SSLv3 client hello messages. This especially
means, that it will not understand SSLv2 client hello messages which are widely used for compatibility reasons, see SSLv23_*_method().
TLSv1_method(void), TLSv1_server_method(void), TLSv1_client_method(void)
A TLS/SSL connection established with these methods will only understand the TLSv1 protocol. A client will send out TLSv1 client hello
messages and will indicate that it only understands TLSv1. A server will only understand TLSv1 client hello messages. This especially
means, that it will not understand SSLv2 client hello messages which are widely used for compatibility reasons, see SSLv23_*_method().
It will also not understand SSLv3 client hello messages.
SSLv23_method(void), SSLv23_server_method(void), SSLv23_client_method(void)
A TLS/SSL connection established with these methods will understand the SSLv2, SSLv3, and TLSv1 protocol. A client will send out SSLv2
client hello messages and will indicate that it also understands SSLv3 and TLSv1. A server will understand SSLv2, SSLv3, and TLSv1
client hello messages. This is the best choice when compatibility is a concern.
The list of protocols available can later be limited using the SSL_OP_NO_SSLv2, SSL_OP_NO_SSLv3, SSL_OP_NO_TLSv1 options of the
SSL_CTX_set_options() or SSL_set_options() functions. Using these options it is possible to choose e.g. SSLv23_server_method() and be able
to negotiate with all possible clients, but to only allow newer protocols like SSLv3 or TLSv1.
SSL_CTX_new() initializes the list of ciphers, the session cache setting, the callbacks, the keys and certificates, and the options to its
default values.
RETURN VALUES
The following return values can occur:
NULL
The creation of a new SSL_CTX object failed. Check the error stack to find out the reason.
Pointer to an SSL_CTX object
The return value points to an allocated SSL_CTX object.
SEE ALSO SSL_CTX_free(3), SSL_accept(3), ssl(3), SSL_set_connect_state(3)1.0.1e 2013-02-11 SSL_CTX_new(3SSL)