Shell
如何將多行附加到文件
我正在編寫一個 bash 腳本來查找文件,如果它不存在然後創建它並將其附加到它:
Host localhost ForwardAgent yes
所以
"line then new line 'tab' then text"
我認為它是一種敏感的格式。我知道你可以這樣做:cat temp.txt >> data.txt
但它似乎很奇怪,因為它有兩條線。有沒有辦法以這種格式附加它:
echo "hello" >> greetings.txt
# possibility 1: echo "line 1" >> greetings.txt echo "line 2" >> greetings.txt # possibility 2: echo "line 1 line 2" >> greetings.txt # possibility 3: cat <<EOT >> greetings.txt line 1 line 2 EOT
如果需要 sudo(其他使用者權限)來寫入文件,請使用:
# possibility 1: echo "line 1" | sudo tee -a greetings.txt > /dev/null # possibility 3: sudo tee -a greetings.txt > /dev/null <<EOT line 1 line 2 EOT
echo -e "Hello \nWorld \n" >> greetings.txt