シェルスクリプトあっさり7選!!

test01.sh

#!/bin/bash

# シェルスクリプトの実行と引数
# $bash test.sh
# $bash test.sh hoge
# $bash test.sh hoge fuga
# $bash test.sh hoge fuga piyo

echo "Running $0"
echo "arg1: $1"
echo "arg2: $2"
echo "arg3: $3"

test02.sh

#!/bin/bash

# 制御構文_if
# ファイルが存在するか判定
# $bash test.sh

echo "Running $0"

txt="./story.txt"
if [ -f $txt ] ; then
	echo "File is exists."
	#cat $txt | grep -oP "吾輩は.*?。"
else
	echo "File is not exists..."
fi

test03.sh

#!/bin/bash

# 制御構文_case
# grepの結果を配列に格納し確認する
# $bash test.sh 2

# -eq -> equal
# -ne -> not equal
# -lt -> less than
# -le -> less equal
# -gt -> greater than
# -ge -> greater equal

echo "Running $0"
if [ $# -gt 0 ] ; then

	case $1 in
		1) echo "吾輩は" ;;
		2) echo "猫である。" ;;
		3) echo "名前はまだ無い" ;;
		4) echo "ですけど何か問題でも!?" ;;
	esac

else
	echo "No parameters..."
fi

test04.sh

#!/bin/bash

# 制御構文_for
# grepの結果を配列に格納し確認する
# $bash test.sh

echo "Running $0"

txt="./story.txt"
if [ -f $txt ] ; then
	echo "File is exists."

	msgs=($(grep -oP "吾輩は.*?。" $txt))

	# for
	echo "= This is for ="
	for msg in ${msgs[@]}
	do
		echo $msg
	done

else
	echo "File is not exists..."
fi

test05.sh

#!/bin/bash

# 制御構文_while
# grepの結果を配列に格納し確認する
# $bash test.sh

echo "Running $0"

txt="./story.txt"
if [ -f $txt ] ; then
	echo "File is exists."

	msgs=($(grep -oP "吾輩は.*?。" $txt))

	# while
	echo "= This is while ="
	len=${#msgs[*]}
	i=0
	while [ $i -lt $len ]
	do
		echo $i ${msgs[$i]}
		i=$((i+1))
	done

else
	echo "File is not exists..."
fi

test06.sh

#!/bin/bash

# 制御構文_function
# 関数の利用
# $bash test.sh

echo "Running $0"

hoge(){
	echo "Hello, Nobunaga!!"
}

fuga(){
	echo "Hello, Hideyoshi!!"
}

greeting(){
	echo "Good morning" $1 "," $2 "how are you today!?"
}

hoge
fuga
greeting Ieyasu Date

test07.sh

#!/bin/bash

# seq
# 連続した数を生成する
# $bash test.sh

echo "Running $0"

for i in `seq 0 100`
do
	echo "counter" $i
done