12-27-2005
Perl One Liner
Hi ,
Can anybody explain how this perl one liner works..
It is to test whether the number is prime or not
perl -le 'print "PRIME" if (1 x shift) !~ /^(11+)\1+$/' 19
Thanks in advance
Shihab
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I'm writing a script to automate some post-install tasks on RHEL4 servers.
I need the following code to insert an 'A' in the middle of a string, then replace the string in a file. I know I can use sed to do this, but I'd like to use perl's in place edit so I don't have to write to a temp file,... (1 Reply)
Discussion started by: Xek
1 Replies
2. Shell Programming and Scripting
In a ~4GB file there are lines like,
13.13.4.3 Googe.com - Jan/23/2011:00:00:00 +0000 "URL Google HTTP/1.1" 45 56 208 - "http://www.gogle.com/webhp?hl=en&tab=nw#hl=en&source=hp&biw=1366&bih=667&q=hello&aq=f&aqi=&aql=&oq=&fp=c432485467934a89" ".Net; Fox" -
13.145.3.3 Goge.com -... (3 Replies)
Discussion started by: gameboy87
3 Replies
3. Shell Programming and Scripting
Thanks for giving your time and effort to answer questions and helping newbies like me understand awk.
I have a huge file, millions of lines, so perl takes quite a bit of time, I'd like to convert these perl one liners to awk.
Basically I'd like all lines with ISA sandwiched between... (9 Replies)
Discussion started by: verge
9 Replies
4. Shell Programming and Scripting
can someone help me translate the following command, from:
/usr/bin/awk "/^$TOFDAYM $TOFDAYD /,0" $LOGFILE
to something like
perl -e .....
basically, i want to use perl to do awk functions within a shell script. i want to do the above awk, using perl.
any suggestions? (9 Replies)
Discussion started by: SkySmart
9 Replies
5. Shell Programming and Scripting
hello,
I want to replace awk with a perl one liner in unix.
i use in awk REGEX and FS ( field separator) because
awk syntaxes in different unix os versions have not the same behaviour.
Awk, Nawk and GNU Awk Cheat Sheet - good coders code, great reuse
i have a file named "file" and want... (5 Replies)
Discussion started by: bora99
5 Replies
6. UNIX for Dummies Questions & Answers
Not quite a unix question but problem in a perl command. Taking a chance if someone knows about the error
cat 1
a b c d
perl -p -e 's/a/b/g' 1
b b c d
What is the problem here??
perl -p -i -e 's/a/b/g' 1
Can't remove 1: Text file busy, skipping file. (2 Replies)
Discussion started by: analyst
2 Replies
7. Shell Programming and Scripting
Hi all,
I need a Perl one liner which prints a newline into a .txt file, only where the line starts with "/mediawiki-1.19.0/". It should add the newline to the line before.
My problem is, when I try to realize this (with my little knowledge :rolleyes: ) i come to the point where the // are... (4 Replies)
Discussion started by: Mr.Smith
4 Replies
8. Shell Programming and Scripting
hi,
I am using PERL one liner for oracle database connection as :
$PERL -e "use DBI; DBI->connect(qw(DBI:Oracle:SID user passwd));"
is there a way to append select statement to this connection ? i.e. DB connection and select stmt in one line ?
how to do sysdba connection using one lines... (1 Reply)
Discussion started by: talashil
1 Replies
9. Shell Programming and Scripting
Greetings fellow scripters.
I find myself editing multiple files, sometimes with the same bits of information. My bash script, a changelog, and a plist file (OS X). Once I realized this, I thought why not script part of this process (and so it begins). In any case, I've solved several of the... (1 Reply)
Discussion started by: reid
1 Replies
10. Shell Programming and Scripting
Hi
I have an inherited perl script that extracts the first three octets of an IP Address using a combination of split() against a dot and then builds it all back together again, its a whole block of code to do this
I wondered if anyone had a one liner in their arsenal to extract the first... (7 Replies)
Discussion started by: hcclnoodles
7 Replies
LEARN ABOUT FREEBSD
prime
PRIME(1SSL) OpenSSL PRIME(1SSL)
NAME
openssl-prime, prime - compute prime numbers
SYNOPSIS
openssl prime [-help] [-hex] [-generate] [-bits] [-safe] [-checks] [number...]
DESCRIPTION
The prime command checks if the specified numbers are prime.
If no numbers are given on the command line, the -generate flag should be used to generate primes according to the requirements specified
by the rest of the flags.
OPTIONS
[-help]
Display an option summary.
[-hex]
Generate hex output.
[-generate]
Generate a prime number.
[-bits num]
Generate a prime with num bits.
[-safe]
When used with -generate, generates a "safe" prime. If the number generated is n, then check that (n-1)/2 is also prime.
[-checks num]
Perform the checks num times to see that the generated number is prime. The default is 20.
COPYRIGHT
Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a
copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.
1.1.1a 2018-12-18 PRIME(1SSL)