Is it possible to combine a regular expression with a aritmetical expression? For example, taking a 8-numbers caracter sequece and casting each output of a grep, comparing to a constant.
THX! (2 Replies)
Hi sir,
i want to make such programe which takes MAC(Ethernet) address of any host & give me its IP address.......
but i'm nt getting that how i can pass the MAC address to Frame........
Please give me an idea for making such program...
Thanks & regards
Krishna (3 Replies)
Hi does anybody have a ksh/sh/bash function that i can embed into my script that i could use to validate an inputted IP address, I tried using one big long regular expression but it got very long and complicated
ie
#!/bin/ksh
echo " Please enter your IP address"
read IP
---some function... (6 Replies)
Hi there
I lost connectivity to one of our remote systems and when I checked the messages log I found the following:
Aug 10 23:42:34 host xntpd: time reset (step) 1.681729 s
Aug 16 13:20:51 host ip: WARNING: node "mac address" is using our IP address x.x.x.x on aggr1
Aug 16 13:20:51 host... (9 Replies)
CA_RELEASE has a value of 6. I need to check if that this is a numeric value. if not error.
source $CA_VERSION_DATA
if * ]
then
echo "CA_RELESE $CA_RELEASE is invalid"
exit -1
fi
+ source /etc/ncgl/ca_version_data
++ CA_PRODUCT_ID=samxts
++ CA_RELEASE=6
++ CA_WEEK_NO=7
++... (3 Replies)
Hi all ,
I have a string in my weblog xheader v6-day-2011:xx:yy:zz:qq:qq:ww:ee:rr
My requirement is to lookup the sting v6-day-2011 in this header and if found would like to extract the V6 ip part .
v6-day-2011 is always constant for a ipv6 entry so i would like to extract every thing... (4 Replies)
Hi all,
How am I read a file, find the match regular expression and overwrite to the same files.
open DESTINATION_FILE, "<tmptravl.dat" or die "tmptravl.dat";
open NEW_DESTINATION_FILE, ">new_tmptravl.dat" or die "new_tmptravl.dat";
while (<DESTINATION_FILE>)
{
# print... (1 Reply)
Hello All,
I'm trying to extract the lines between two consecutive elements of an array from a file.
My array looks like:
problem_arr=(PRS111 PRS213 PRS234)
j=0
while } ]
do
k=`expr $j + 1`
sed -n "/${problem_arr}/,/${problem_arr}/p" problemid.txt
---some operation goes... (11 Replies)
four interfaces with ifconfig
all interfaces have the same mac. If is not set for unique.
but it still works.
what difference does it make to have all macs the same or different? (4 Replies)
Discussion started by: rrodgers
4 Replies
LEARN ABOUT MOJAVE
shasum5.18
SHASUM(1) Perl Programmers Reference Guide SHASUM(1)NAME
shasum - Print or Check SHA Checksums
SYNOPSIS
Usage: shasum [OPTION]... [FILE]...
Print or check SHA checksums.
With no FILE, or when FILE is -, read standard input.
-a, --algorithm 1 (default), 224, 256, 384, 512, 512224, 512256
-b, --binary read in binary mode
-c, --check read SHA sums from the FILEs and check them
-t, --text read in text mode (default)
-p, --portable read in portable mode
produces same digest on Windows/Unix/Mac
-0, --01 read in BITS mode
ASCII '0' interpreted as 0-bit,
ASCII '1' interpreted as 1-bit,
all other characters ignored
The following two options are useful only when verifying checksums:
-s, --status don't output anything, status code shows success
-w, --warn warn about improperly formatted checksum lines
-h, --help display this help and exit
-v, --version output version information and exit
When verifying SHA-512/224 or SHA-512/256 checksums, indicate the
algorithm explicitly using the -a option, e.g.
shasum -a 512224 -c checksumfile
The sums are computed as described in FIPS-180-4. When checking, the
input should be a former output of this program. The default mode is to
print a line with checksum, a character indicating type (`*' for binary,
` ' for text, `?' for portable, `^' for BITS), and name for each FILE.
Report shasum bugs to mshelor@cpan.org
DESCRIPTION
Running shasum is often the quickest way to compute SHA message digests. The user simply feeds data to the script through files or
standard input, and then collects the results from standard output.
The following command shows how to compute digests for typical inputs such as the NIST test vector "abc":
perl -e "print qq(abc)" | shasum
Or, if you want to use SHA-256 instead of the default SHA-1, simply say:
perl -e "print qq(abc)" | shasum -a 256
Since shasum mimics the behavior of the combined GNU sha1sum, sha224sum, sha256sum, sha384sum, and sha512sum programs, you can install this
script as a convenient drop-in replacement.
Unlike the GNU programs, shasum encompasses the full SHA standard by allowing partial-byte inputs. This is accomplished through the BITS
option (-0). The following example computes the SHA-224 digest of the 7-bit message 0001100:
perl -e "print qq(0001100)" | shasum -0 -a 224
AUTHOR
Copyright (c) 2003-2013 Mark Shelor <mshelor@cpan.org>.
SEE ALSO
shasum is implemented using the Perl module Digest::SHA or Digest::SHA::PurePerl.
perl v5.18.2 2018-08-17 SHASUM(1)