bash echo newline 答案您可以使用printf代替: printf "hello\nworld\n" printf具有比echo更一致的行为。 echo的行为在不同版本之间变化很大。 你确定你在 bash 吗?这三种方式对我有用: echo -e "Hello\nworld" echo -e 'Hello\nworld' echo Hello$'\n'worldecho $'hello\nworld' 版画 hello world ...
echo your echo to print something with new line When you echo a piece of text, the echo command will automatically add a newline (and here is how you can prevent it) to the end of your text. This means that you can chain multiple echo commands together to cause a newline. $ echo ...
To ensure proper formatting,echo "abc" >>file.txtshould be used to add a newline afterabc, rather than before. Ifabcappears on a line by itself, it indicates that the newline precedingabcwas already included infile.txt. It's important to remember that it's common for text files to con...
4. Using printf with Newline Characters 5. Using a Here Document 6. Using the read Command with the Here Document 7. Conclusion 1. Overview In this article, we will see how to echo multiple lines, primarily using the echo command in various forms. Additionally, we will look at alternative...
var=`cat log.txt` # 如果有多个命令,命令之间以分号 ; 分隔 var=$(cat log.txt) # 更推荐的写法 Fir_File_Lines=$(wc -l $(ls | sed -n '1p')) # 可以嵌套 echo "$var" # 如果被替换的命令的输出内容有换行符,或者含有多个连续的空白符,那么在输出变量时应该将变量用双引号包围,否则系统会...
echo-n"Please enter your name: " readname echo-n"Hello,$name!" echo" " The -n option will prevent echo from add a newline character at the end of the output and this will produce the following output: 2: How to Use echo without New Line Character Using the -e Option with Escape...
[root@250-shiyan ~]# echo '$p'wd'' $pwd 3.1.2.3 Double Quotes Enclosing characters in double quotes (‘"’) preserves the literal value of all characters within the quotes, with the exception of ‘$’, ‘`’, ‘\’, and, when history expansion is enabled, ‘!’. The characters ‘...
你可以printf改用:printf "hello\nworld\n"printf比一致行为更一致echo。echo不同版本之间的行为差别很大。 0 0 0 忽然笑 你确定你在bash吗?这三种方式对我有用:echo -e "Hello\nworld"echo -e 'Hello\nworld'echo Hello$'\n'world 0 0 0 随时...
echo-e"Hello\tWorld" Notice below the huge gap between the word Hello and World. Interpreting an escape sequence Inserting Strings to a New Line Printing a long single line of string makes a user struggle to read its entirety. Luckily, the \n option lets you add a new line character in...
42'> /etc/profile# Redirecting sudotime --format=%s sleep 10# Passing time(1) flags to time builtinwhilereadh;dossh"$h"uptime# Commands eating while loop inputaliasarchive='mv $1 /backup'# Defining aliases with argumentstr -cd'[a-zA-Z0-9]'# [] around ranges in trexecfoo;echo"...