Linux

Install Perl PAR::Packer

Online Installation

Install Necessary RPMs

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[root]# yum install perl-ExtUtils-Embed
[root]# yum install perl-Crypt-OpenSSL*
[root]# yum install openssl*
[root]# yum install perl-CPAN

Install Required Perl Modules

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[root]# perl -MCPAN -e 'install Filter::Crypto'
[root]# perl -MCPAN -e 'install ExtUtils::CBuilder'
[root]# perl -MCPAN -e 'install PAR::Packer'

It will might report Errors when installing PAR::Packer. You must install the missing Perl package prior to installation of PAR::Packer.

Offline Installation

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Linux

Script: Add a Linux User 

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#!/bin/bash
# Script to add a user to Linux system
# -------------------------------------------------------------------------
# Copyright (c) 2007 nixCraft project <http://bash.cyberciti.biz/>
# This script is licensed under GNU GPL version 2.0 or above
# Comment/suggestion: <vivek at nixCraft DOT com>
# -------------------------------------------------------------------------
# See url for more info:
# http://www.cyberciti.biz/tips/howto-write-shell-script-to-add-user.html
# -------------------------------------------------------------------------
if [ $(id -u) -eq 0 ]; then
	read -p "Enter username : " username
	read -s -p "Enter password : " password
	egrep "^$username" /etc/passwd >/dev/null
	if [ $? -eq 0 ]; then
		echo "$username exists!"
		exit 1
	else
		pass=$(perl -e 'print crypt($ARGV[0], "password")' $password)
		useradd -m -p $pass $username
		[ $? -eq 0 ] && echo "User has been added to system!" || echo "Failed to add a user!"
	fi
else
	echo "Only root may add a user to the system"
	exit 2
fi
Linux

Install Perl Module

List all installed Perl modules
perldoc perllocal or instmodsh

Check if a specified module is installed
perldoc -li math::round # -l = list; -i = ignore case

Install Perl modules
Given an example of Math::Round to be installed

  1. Search & download the module (Math-Round-0.07.tar.gz) at https://metacpan.org/.
  2. Install the module
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    % tar xvf Math-Round-0.07.tar.gz`
    % perl Makefile.PL
    % make
    % make test
    % sudo make install
VLSI

Integrate SOS in Virtuoso

To get Cliosoft SOS integrated in Cadence Virtuoso, what you need to do is just to put 3 files in your $HOME (~/).

1) .cdsinit

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% cat ~/.cdsinit
let( (clioDir)
  clioDir = getShellEnvVar("CLIOSOFT_DIR")
  load((strcat clioDir "/scripts/cds_sosviadfII.il"))
)

2) cdsLibMgr.il

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% cat ~/cdsLibMgr.il
let( (clioDir)
  clioDir = getShellEnvVar("CLIOSOFT_DIR")
  load((strcat clioDir "/scripts/cdsLibMgr.il"))
)

3) cdsinfo.tag

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% cat ~/cdsinfo.tag
DMTYPE sos
Linux

Linux Command: Ip

ip 是个命令， ip 命令的功能很多！基本上它整合了 ifconfig 与 route 这两个命令，不过 ip 的功能更强大。

ip命令用法

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% sudo ip
Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }
       ip [ -force ] -batch filename
where  OBJECT := { link | addr | addrlabel | route | rule | neigh | ntable |
                   tunnel | maddr | mroute | mrule | monitor | xfrm | token }
       OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[esolve] |
                    -h[uman-readable] | -iec |
                    -f[amily] { inet | inet6 | ipx | dnet | link } |
                    -o[neline] | -t[imestamp] | -b[atch] [filename] |
                    -rc[vbuf] [size]}

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A Man's Most Powerful Capacity

A man’s most powerful capacity does not lie in how intelligent he is. It resides in -

  • His/her persistency in a tedious job until it perfectly gets done;
  • His/her relentless exploration for unknown things;
  • His/her passion for the skills he/she loves;
  • His/her curiosity for every single trivial matter.