Linux 将人类可读的 Epoch 日期转换为变量
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Getting human readable date from Epoch into variable
提问by W3BGUY
Okay, this is probably a very basic question; but, I'm just getting back in the saddle with Linux.
好的,这可能是一个非常基本的问题;但是,我刚回到 Linux 的马鞍上。
I have a variable that hold an Epoch time called pauseTime. I need that variable to become human readable (something like 2012-06-13 13:48:30).
我有一个变量,它保存一个名为 pauseTime 的 Epoch 时间。我需要该变量成为人类可读的(类似于 2012-06-13 13:48:30)。
I know I can just type in
我知道我可以输入
date -d @133986838 //just a random number there
and that will print something similar. But I need to get the variable to hold that human readable date, instead of the epoch time... I keep running into errors with everything I'm trying. Any thoughts on how I can do this?
这将打印类似的东西。但是我需要让变量来保存那个人类可读的日期,而不是纪元时间......我在尝试的每件事中都遇到了错误。关于我如何做到这一点的任何想法?
采纳答案by 0xC0000022L
Well do this:
那么这样做:
VARIABLENAME=$(date -d @133986838)
and then
进而
export VARIABLENAME
or in Bash do directly:
或在 Bash 中直接执行:
export VARIABLENAME=$(date -d @133986838)
If you want formatting, say in the usual ISO format:
如果要格式化,请使用通常的 ISO 格式:
export ISODATE=$(date -d @133986838 +"%Y-%m-%d %H:%M:%S")
# or
EPOCHDATE=133986838
export ISODATE=$(date -d @$EPOCHDATE +"%Y-%m-%d %H:%M:%S")
The formats behind the +
are explained in man date
.
后面的格式+
在man date
.
Note: $()
is the modern form of the backticks. I.e. catching output from a command into a variable. However, $()
makes some things easier, most notably escaping rules inside of it. So you should always prefer it over backticks if your shell understands it.
注意:$()
是现代形式的反引号。即将命令的输出捕获到变量中。然而,$()
让一些事情变得更容易,最显着的是逃避其中的规则。所以如果你的 shell 理解它,你应该总是喜欢它而不是反引号。