SO: Add missing files

2ano1/SO/aula02/aula02e01-v2.sh

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+#!/usr/bin/env bash
+# Este é o meu primeiro script
+msg="O meu segundo script em bash!"
+echo msg

2ano1/SO/aula02/aula02e01.sh

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+#!/usr/bin/env bash
+# Este é o meu primeiro script
+msg="O meu primeiro script em bash!"
+echo $msg

2ano1/SO/aula02/aula02e02.sh

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+#!/usr/bin/env bash
+# Atenção aos espaços
+echo Este  e    um    teste
+echo "Este   e   um    teste"

2ano1/SO/aula02/aula02e03.sh

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+#!/usr/bin/env -S bash -i
+# O comando type permite saber o tipo de um comando
+type rm
+type cd
+type for
+type ll
+type dequote

2ano1/SO/aula02/aula02e04-b.sh

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+#!/usr/bin/env bash
+echo "Todos os items em /etc:"
+find /etc -maxdepth 1 -printf "%f\n"
+
+printf "\n"
+
+echo "Começam por a:"
+find /etc -maxdepth 1 -name "a*" -printf "%f\n"
+
+printf "\n"
+
+echo "Começam por a e têm mais que 3 caracteres":
+find /etc -maxdepth 1 -regextype egrep -regex ".*/a.{3,}" -printf "%f\n"
+
+printf "\n"
+
+echo "Contêm conf no nome":
+find /etc -maxdepth 1 -name "*conf*" -printf "%f\n"

2ano1/SO/aula02/aula02e04.sh

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+#!/usr/bin/env -S bash
+echo "O meu editor por omissão BASH $BASH \$BASH"
+echo 'O meu editor por omissão BASH $BASH \$BASH'
+echo $(( 5 + 5 ))
+(( 5 > 0 )) && echo "cinco é maior do que zero"
+today=$(date); echo $today

2ano1/SO/aula02/aula02e05.sh

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+#!/usr/bin/env bash
+echo "$#"
+echo "Arg 1: $1"
+echo "Arg 2: $2"
+echo "$*"
+echo "$@"

2ano1/SO/aula02/aula02e05d.sh

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+#!/usr/bin/env bash
+echo using '$*:' $*
+for i in $*; do echo "$i"; done
+
+echo using '$@:' $@
+for i in $@; do echo "$i"; done
+
+echo using '"$*":' "$*"
+for i in "$*"; do echo "$i"; done
+
+echo using '"$@":' "$@"
+for i in "$@"; do echo "$i"; done

2ano1/SO/aula02/aula02e06.sh

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+#!/usr/bin/env bash
+# Parameter Expansion
+file="$HOME/.bashrc"
+echo "File path: $file"
+echo "File name: ${file##*/}"
+echo "Directory name: ${file%/*}"

2ano1/SO/aula02/aula02e07.sh

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+#!/usr/bin/env bash
+# Brace Expansion
+echo {1..9}
+echo {0,1}{0..9}

2ano1/SO/aula02/aula02e08.sh

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+#!/usr/bin/env bash
+# Exit status
+ping -c 1 www.ua.pt
+echo "Exit code: $?" # $? gives exit code of last process
+ping -c 1 wwwww.ua.pt
+echo "Exit code: $?"

2ano1/SO/aula02/aula02e09.sh

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+#!/usr/bin/env bash
+mkdir d && cd d && pwd
+echo "----------------"
+pwd && rm xpto || echo "I couldn't remove the file"

2ano1/SO/aula02/c10param.sh

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+#!/usr/bin/env bash
+touch "$1"{0..9}.dat

2ano1/SO/aula02/c10xpto.sh

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+#!/usr/bin/env bash
+touch xpto0{0..9}.dat

2ano1/SO/aula02/exitfile.sh

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+#!/usr/bin/env bash
+file -E "$1"
+echo "Exit code: $?"

2ano1/SO/aula02/px.sh

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+#!/usr/bin/env bash
+chmod +x "$@"

2ano1/SO/aula02/soma2.sh

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+#!/usr/bin/env bash
+if [[ "$#" -ne "2" ]]; then
+	echo "Usage: $0 num1 num2"
+	exit 1
+fi
+
+echo $(("$1" + "$2"))

2ano1/SO/aula03/aula03e01.sh

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+#!/usr/bin/env bash
+# Agrupamento de comandos na Bash
+{
+	i=0
+	while read line; do
+		echo $i: $line
+		i=$(($i+1))
+	done
+} < $1

2ano1/SO/aula03/aula03e02a.sh

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+#!/usr/bin/env bash
+# Conditional block if
+if $1; then
+	echo "Verdadeiro"
+else
+	echo "Falso"
+fi

2ano1/SO/aula03/aula03e02b.sh

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+#!/usr/bin/env bash
+# Conditional block if
+if [[ $1 = $2 ]] ; then
+	echo "O arg1 é igual ao arg2"
+else
+	echo "Os args são diferentes"
+fi

2ano1/SO/aula03/aula03e02c.sh

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+#!/usr/bin/env bash
+# Conditional block if
+if [ $1 = $2 ]; then
+	echo "O arg1 é igual ao arg2"
+else
+	echo "Os args são diferentes"
+fi

2ano1/SO/aula03/aula03e02d.sh

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+#!/usr/bin/env bash
+# Conditional block if
+if [ "$1" = "$2" ]; then
+	echo "O arg1 é igual ao arg2"
+else
+	echo "Os args são diferentes"
+fi

2ano1/SO/aula03/aula03e02e.sh

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+#!/usr/bin/env bash
+# Conditional block if
+if [ "$1" -gt 5 ] && [ "$1" -lt 10 ]; then
+	echo "número maior do que 5 e menor do que 10"
+fi

2ano1/SO/aula03/aula03e03.sh

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+#!/usr/bin/env bash
+# This script checks the existence of a file
+
+if [ "$#" -ne 1 ]; then
+	if [ "$#" -lt 1 ]; then
+		>&2 echo "Error: Not enough arguments"
+	else
+		>&2 echo "Error: Too many arguments"
+	fi
+
+	>&2 echo "Usage: $0 file"
+	exit 1;
+fi
+
+echo "Checking..."
+if [[ -f "$1" ]] ; then
+	echo "$1 existe."
+else
+	echo "$1 não existe"
+fi
+echo "...done."

2ano1/SO/aula03/aula03e03b.sh

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+#!/usr/bin/env bash
+# This script checks the existence of a file
+
+if [ "$#" -ne 1 ]; then
+	if [ "$#" -lt 1 ]; then
+		>&2 echo "Error: Not enough arguments"
+	else
+		>&2 echo "Error: Too many arguments"
+	fi
+
+	>&2 echo "Usage: $0 file"
+	exit 1;
+fi
+
+echo "Checking..."
+
+if ! [ -e "$1" ]; then
+	echo "$1 não existe."
+	exit 1
+fi
+
+TYPE="unknown file"
+
+if [ -f "$1" ]; then TYPE="regular file"
+elif [ -b "$1" ]; then TYPE="block dev file"
+elif [ -c "$1" ]; then TYPE="char dev file"
+elif [ -d "$1" ]; then TYPE="directory"
+fi
+
+echo "$1 is a $TYPE"
+
+PERMS=""
+
+if [ -r "$1" ]; then PERMS="${PERMS}r"; else PERMS="${PERMS}-"; fi
+if [ -w "$1" ]; then PERMS="${PERMS}w"; else PERMS="${PERMS}-"; fi
+if [ -x "$1" ]; then PERMS="${PERMS}x"; else PERMS="${PERMS}-"; fi
+
+echo "$1 permissions: $PERMS"
+
+echo "...done."

2ano1/SO/aula03/aula03e03c.sh

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+#!/usr/bin/env bash
+# Testa se ano dado (ou ano actual, se nenhum for dado)
+# é bissexto ou comum.
+if [[ $# = 1 ]]; then
+	year=$1
+else
+	year=$(date +%Y)
+fi
+
+if [[ $(($year % 400)) -eq "0" ]]; then
+	echo "Ano bissexto. Fevereiro tem 29 dias."
+elif [[ $(($year % 4)) -eq 0 ]]; then
+	if [[ $(($year % 100)) -ne 0 ]]; then
+		echo " Ano bissexto. Fevereiro tem 29 dias."
+	else
+		echo "Ano comum. Fevereiro tem 28 dias."
+	fi
+else
+	echo " Ano comum. Fevereiro tem 28 dias."
+fi

2ano1/SO/aula03/aula03e04.sh

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+#!/usr/bin/env bash
+#This script does a very simple test for checking disk space.
+
+# `df -h`, report file system space usage in human readable format
+# `awk '{print $5}'` - Print the fifth column (white space separated columns)
+# `grep %` - Remove lines without the % symbol
+# `grep -v Use` - Remove lines with the `Use` word
+# `sort -n` - Sort lines numerically
+# `tail -1` - Select the last line
+# `cut -d "%" -f1 -` - Run the command `cut` reading from stdin (`-`) with the delimiter %
+# 					   and selecting the first field.
+space=$(df -h | awk '{print $5}' | grep % | grep -v use | sort -n \
+		| tail -1 | cut -d "%" -f1 - | awk '{printf("%02d\n", $1)}')
+
+echo "largest occupied space = $space%"
+case $space in
+	[0-6][0-9]) # espaço < 70%
+		Message="All OK."
+		;;
+	[7-8][0-9] ) # 70% <= espaço < 90%
+		Message="Cleaning out. One partition is $space % full."
+		;;
+	9[0-8] ) # 90% <= espaço < 99%
+		Message="Better buy a new disk. One partition is $space % full."
+		;;
+	99 ) # espaço = 99%
+		Message="I'm drowning here! There's a partition at $space %!"
+		;;
+	* )
+		Message="I seem to be running with a non-existent disk..."
+		;;
+esac
+echo $Message

2ano1/SO/aula03/aula03e04b.sh

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+#!/usr/bin/env bash
+#This script does a very simple test for checking disk space.
+
+# `df -h`, report file system space usage in human readable format
+# `awk '{print $5}'` - Print the fifth column (white space separated columns)
+# `grep %` - Remove lines without the % symbol
+# `grep -v Use` - Remove lines with the `Use` word
+# `sort -n` - Sort lines numerically
+# `tail -1` - Select the last line
+# `cut -d "%" -f1 -` - Run the command `cut` reading from stdin (`-`) with the delimiter %
+# 					   and selecting the first field.
+space=$(df -h | awk '{print $5}' | grep % | grep -v Use | sort -n \
+		| tail -1 | cut -d "%" -f1 -)
+
+echo "largest occupied space = $space%"
+
+largest=$(df | awk '{print $2 " " $1}' | tail -n +2 | sort -n -k1 \
+		  | tail -1 | awk '{print $2 ": " $1}' | numfmt --field=2 --to=iec --from-unit=1024 )
+
+echo "Largest partition $largest"
+case $space in
+	[0-6][0-9]) # espaço < 70%
+		Message="All OK."
+		;;
+	[7-8][0-9] ) # 70% <= espaço < 90%
+		Message="Cleaning out. One partition is $space % full."
+		;;
+	9[0-8] ) # 90% <= espaço < 99%
+		Message="Better buy a new disk. One partition is $space % full."
+		;;
+	99 ) # espaço = 99%
+		Message="I'm drowning here! There's a partition at $space %!"
+		;;
+	* )
+		Message="I seem to be running with a non-existent disk..."
+		;;
+esac
+echo $Message

2ano1/SO/aula03/aula03e04c.sh

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+#!/usr/bin/env bash
+shopt -s extglob
+
+case "$1|$2" in
+	?([0-9])[0-9]"|"sec*)
+		echo "Válido."
+		;;
+	* )
+		echo "Não é válido"
+		;;
+esac

2ano1/SO/aula03/aula03e05a.sh

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+#!/usr/bin/env bash
+# For all the files in a folder, show their properties
+for f in $1/*; do
+	file "$f"
+done

2ano1/SO/aula03/aula03e05b.sh

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+#!/usr/bin/env bash
+if [ "$#" -ne 1 ]; then
+	if [ "$#" -lt 1 ]; then
+		>&2 echo "Error: Not enough arguments"
+	else
+		>&2 echo "Error: Too many arguments"
+	fi
+
+	>&2 echo "Usage: $0 dir"
+	exit 1;
+fi
+# For all the files in a folder, show their properties
+for f in $1/*; do
+	file "$f"
+done