bash 如何使用awk在末尾添加新行
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how to add new line at the end with awk
提问by fluffypuffy
I was searching and trying a lot of different approaches, but non of them really did what I need. Hopefully it was not asked million times before.
我在寻找并尝试了很多不同的方法，但没有一个真正满足我的需求。希望之前没有被问过百万次。
I have this alias in my bashrc:
我的 bashrc 中有这个别名：
alias temp='awk '\''{ printf ("%0.1f",/1000); }'\'' < /sys/devices/platform/sunxi-i2c.0/i2c-0/0-0034/temp1_input'
output of it is:
它的输出是：
measure@remote ~ $ temp
10.6measure@remote ~ $
what I'm trying to achieve is ouput like this:
我想要实现的是这样的输出：
measure@remote ~ $ temp
10.6
measure@remote ~ $
回答by Cyrus
Replace
代替
"%0.1f"
with
和
"%0.1f\n"
回答by Inian
Never use an alias for substituting a command and especially ones involving nested quotes like this. Just use a function in .bashrcto simplify it
永远不要使用别名来代替命令，尤其是像这样涉及嵌套引号的命令。只需使用一个函数.bashrc来简化它
get_ratio() {
awk '{ printf ("%0.1f\n",/1000); }' /sys/devices/platform/sunxi-i2c.0/i2c-0/0-0034/temp1_input
}
and call it from the command line
并从命令行调用它
measure@remote ~ $ source ~/.bashrc
measure@remote ~ $ get_ratio
回答by James Brown
Generic answer to how to add new line at the end with awkwould be:
如何使用 awk 在末尾添加新行的通用答案是：
$ awk '... END{print "\n"}' # or print ORS
