I am glad if it was useful, @jiam912
The code has grown a bit, but I could not find another way to get around the buffer size limit
The problem was as follows.
If the string starting with 'a' was even line then the code did not work properly.
Add the 'l' command to look at the contents of the buffer (the line marked at the end with a dollar sign)
and add one line to the input file.
а new version
Last edited by nezabudka; 02-29-2020 at 02:52 AM..
I want to delete lines like this
sed '/FROM_HERE/,/TO_HERE/d'
but I would like to *not* delete the second match, i.e. the TO_HERE line. How can I achieve this?
Thank you! (1 Reply)
Hi, I've searched in this forum all day long but was not able to find enough codes to help me do a task. The only code that I can come up with is this:
sed '/ /,/ /{//p;d;}' inputfile > outputfile
I would like to sed/awk/grep a file for two patterns and then delete the lines between... (4 Replies)
Hi All,
Below is my requirement. Whatever coming in between ' ', needs to delete.
Input File Contents:
==============
This is nice 'boy'
This 'is
bad
boy.' Got it
Expected Output
===========
This is nice
This
Got it (4 Replies)
Hello sed gurus. I am using ksh on Sun and have a file created by concatenating several other files. All files contain header rows. I just need to keep the first occurrence and remove all other header rows.
header for file
1111
2222
3333
header for file
1111
2222
3333
header for file... (8 Replies)
Hi,
i need help to delete all the lines between 2 matched patterns and the first pattern must be deleted too. sample as follows:
inputfile.txt
>kump_1
...........................
...........................
>start_0124
dgfhghgfh
fgfdgfh
fdgfdh
>kump_2
............................. (7 Replies)
'Hi
I'm using the following code to extract the lines(and redirect them to a txt file) after the pattern match. But the output is inclusive of the line with pattern match.
Which option is to be used to exclude the line containing the pattern?
sed -n '/Conn.*User/,$p' > consumers.txt (11 Replies)
I have a file
Line 1 a
Line 22
Line 33
Line 1 b
Line 22
Line 1 c
Line 4
Line 5
I want to delete all lines before last occurrence of a line which contains something which is defined in a variable. Say a variable var contains 'Line 1', then I need the following in the output.
... (21 Replies)
Hi, I need to print lines which are matching with start pattern "SELECT" and END PATTERN ";" and only select the last "select" statement including the ";" .
I have attached sample input file and the desired input should be as:
INPUT FORMAT:
SELECT
ABCD,
DEFGH,
DFGHJ,
JKLMN,
AXCVB,... (5 Replies)
Discussion started by: nani2019
5 Replies
LEARN ABOUT REDHAT
dnssec-keygen
DNSSEC-KEYGEN(8)DNSSEC-KEYGEN(8)NAME
dnssec-keygen - DNSSEC key generation tool
SYNOPSIS
dnssec-keygen -a algorithm -b keysize -n nametype [ -c class ] [ -e ] [ -g generator ] [ -h ] [ -p protocol ] [ -r randomdev ] [ -s
strength ] [ -t type ] [ -v level ] name
DESCRIPTION
dnssec-keygen generates keys for DNSSEC (Secure DNS), as defined in RFC 2535. It can also generate keys for use with TSIG (Transaction Sig-
natures), as defined in RFC 2845.
OPTIONS -a algorithm
Selects the cryptographic algorithm. The value of algorithm must be one of RSAMD5 or RSA, DSA, DH (Diffie Hellman), or HMAC-MD5.
These values are case insensitive.
Note that for DNSSEC, DSA is a mandatory to implement algorithm, and RSA is recommended. For TSIG, HMAC-MD5 is mandatory.
-b keysize
Specifies the number of bits in the key. The choice of key size depends on the algorithm used. RSA keys must be between 512 and 2048
bits. Diffie Hellman keys must be between 128 and 4096 bits. DSA keys must be between 512 and 1024 bits and an exact multiple of 64.
HMAC-MD5 keys must be between 1 and 512 bits.
-n nametype
Specifies the owner type of the key. The value of nametype must either be ZONE (for a DNSSEC zone key), HOST or ENTITY (for a key
associated with a host), or USER (for a key associated with a user). These values are case insensitive.
-c class
Indicates that the DNS record containing the key should have the specified class. If not specified, class IN is used.
-e If generating an RSA key, use a large exponent.
-g generator
If generating a Diffie Hellman key, use this generator. Allowed values are 2 and 5. If no generator is specified, a known prime
from RFC 2539 will be used if possible; otherwise the default is 2.
-h Prints a short summary of the options and arguments to dnssec-keygen.
-p protocol
Sets the protocol value for the generated key. The protocol is a number between 0 and 255. The default is 2 (email) for keys of type
USER and 3 (DNSSEC) for all other key types. Other possible values for this argument are listed in RFC 2535 and its successors.
-r randomdev
Specifies the source of randomness. If the operating system does not provide a /dev/random or equivalent device, the default source
of randomness is keyboard input. randomdev specifies the name of a character device or file containing random data to be used
instead of the default. The special value keyboard indicates that keyboard input should be used.
-s strength
Specifies the strength value of the key. The strength is a number between 0 and 15, and currently has no defined purpose in DNSSEC.
-t type
Indicates the use of the key. type must be one of AUTHCONF, NOAUTHCONF, NOAUTH, or NOCONF. The default is AUTHCONF. AUTH refers to
the ability to authenticate data, and CONF the ability to encrypt data.
-v level
Sets the debugging level.
GENERATED KEYS
When dnssec-keygen completes successfully, it prints a string of the form Knnnn.+aaa+iiiii to the standard output. This is an identifica-
tion string for the key it has generated. These strings can be used as arguments to dnssec-makekeyset.
o nnnn is the key name.
o aaa is the numeric representation of the algorithm.
o iiiii is the key identifier (or footprint).
dnssec-keygen creates two file, with names based on the printed string. Knnnn.+aaa+iiiii.key contains the public key, and
Knnnn.+aaa+iiiii.private contains the private key.
The .key file contains a DNS KEY record that can be inserted into a zone file (directly or with a $INCLUDE statement).
The .private file contains algorithm specific fields. For obvious security reasons, this file does not have general read permission.
Both .key and .private files are generated for symmetric encryption algorithm such as HMAC-MD5, even though the public and private key are
equivalent.
EXAMPLE
To generate a 768-bit DSA key for the domain example.com, the following command would be issued:
dnssec-keygen -a DSA -b 768 -n ZONE example.com
The command would print a string of the form:
Kexample.com.+003+26160
In this example, dnssec-keygen creates the files Kexample.com.+003+26160.key and Kexample.com.+003+26160.private
SEE ALSO dnssec-makekeyset(8), dnssec-signkey(8), dnssec-signzone(8), BIND 9 Administrator Reference Manual, RFC 2535, RFC 2845, RFC 2539.
AUTHOR
Internet Software Consortium
BIND9 June 30, 2000 DNSSEC-KEYGEN(8)