Category: Root

Linux: Regular Expression: grep

Signed Integers egrep ‘^[+-]?[0-9]+$’ data.txt Floating Point Numbers egrep ‘^[+-]?[0-9]+[.]?[0-9]*$’ data.txt Canadian Postal Code egrep -q ‘^[A-Z][0-9][A-Z] *[0-9][A-Z][0-9]$’ info.txt

Power Shell: Disk Space, Memory Space, Process

Linux: Disk Space, Memory Space, Running Processes

df command – Shows the amount of disk space used and available on Linux file systems. du command – Display the amount of disk space used by the specified files and for each subdirectory. free command top or htop command vmstat command dmidecode command /proc/meminfo file Linux commands show all running processes Apart from ps …

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Linux sed, cat, cut examples

cut -d “:” -f 1,3 /etc/passwd echo $aLine | cut -d “:” -f 1,3 cat /etc/passwd | cut -d “:” -f1,3

Linux: sed: search, replace, delete, print

Word Replace  sed ‘s/root/amrood/’  sed ‘s/root/amrood/g’  sed ‘s/root/amrood/’ | grep root  sed ‘s/root/amrood/g’ | grep root cat /etc/passwd | sed ‘s/root//g’ Delete Lines in the Output cat /etc/passwd | sed ‘1, 5d’ |more cat /etc/passwd | head cat /etc/passwd | sed ‘1d’ | head cat /etc/passwd | grep ‘sh$’ cat /etc/passwd | sed ‘/sh$/d’ Print: …

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1. Libraries used for the project: Predict Future Stock Price using Graph Theory, Machine Learning and Deep Learning)

#import libraries import osimport pandas as pdimport math #Import Libraries for Graph, GNN, and GCN import stellargraph as sgfrom stellargraph import StellarGraphfrom stellargraph.layer import DeepGraphCNNfrom stellargraph.mapper import FullBatchNodeGeneratorfrom stellargraph.mapper import PaddedGraphGeneratorfrom stellargraph.layer import GCN #Machine Learnig related library Imports from tensorflow.keras import layers, optimizers, losses, metrics, Modelfrom sklearn import preprocessing, model_selectionfrom IPython.display import display, HTMLimport …

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Operating Systems: Storage and File Systems

Ref: Internet, Google Images, Google Search

History of Linux

Ref:

Operating Systems: Components, OS User Interfaces

Ref: Internet, Google, Google Images.

Kernel, Shell, Operating Systems and Functionality of Operating Systems

Operating System Functionality Ref: https://www.geeksforgeeks.org/introduction-of-process-management/