Linux 使用 sed 用分隔符分割字符串
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Using sed to split a string with a delimiter
提问by hax0r_n_code
I have a string in the following format:
我有以下格式的字符串：
string1:string2:string3:string4:string5
string1:string2:string3:string4:string5
I'm trying to use sedto split the string on :and print each sub-string on a new line. Here is what I'm doing:
我正在尝试使用sed拆分字符串:并将每个子字符串打印在新行上。这是我在做什么：
cat ~/Desktop/myfile.txt | sed s/:/\\n/
cat ~/Desktop/myfile.txt | sed s/:/\\n/
This prints:
这打印：
string1
string2:string3:string4:string5
How can I get it to split on each delimiter?
我怎样才能让它在每个分隔符上拆分？
采纳答案by fedorqui 'SO stop harming'
To split a string with a delimiter with GNU sed you say:
要使用 GNU sed 用分隔符分割字符串，您可以说：
sed 's/delimiter/\n/g' # GNU sed
For example, to split using :as a delimiter:
例如，要使用:作为分隔符进行拆分：
$ sed 's/:/\n/g' <<< "he:llo:you"
he
llo
you
Or with a non-GNU sed:
或者使用非 GNU sed：
$ sed $'s/:/\\n/g' <<< "he:llo:you"
he
llo
you
In this particular case, you missed the gafter the substitution. Hence, it is just done once. See:
在这种特殊情况下，您错过g了替换后的 。因此，它只完成一次。看：
$ echo "string1:string2:string3:string4:string5" | sed s/:/\n/g
string1
string2
string3
string4
string5
gstands for global and means that the substitution has to be done globally, that is, for any occurrence. See that the default is 1 and if you put for example 2, it is done 2 times, etc.
g代表global 并意味着必须在全局范围内进行替换，即对于任何事件。看到默认值是 1，如果你把例子 2，它做了 2 次，等等。
All together, in your case you would need to use:
总之，在您的情况下，您需要使用：
sed 's/:/\n/g' ~/Desktop/myfile.txt
Note that you can directly use the sed ... filesyntax, instead of unnecessary piping: cat file | sed.
请注意，您可以直接使用sed ... file语法，而不是不必要的管道：cat file | sed.
回答by Jiminion
This should do it:
这应该这样做：
cat ~/Desktop/myfile.txt | sed s/:/\n/g
回答by Ed Morton
Using \nin sedis non-portable. The portable way to do what you want with sedis:
使用\ninsed是不可移植的。做你想做的便携式方式sed是：
sed 's/:/\
/g' ~/Desktop/myfile.txt
but in reality this isn't a job for sedanyway, it's the job trwas created to do:
但实际上，sed无论如何这都不是一份工作，而是tr创建该工作的目的：
tr ':' '
' < ~/Desktop/myfile.txt
回答by anubhava
If you're using gnu sed then you can use \x0Afor newline:
如果您使用的是 gnu sed，那么您可以使用\x0A换行符：
sed 's/:/\x0A/g' ~/Desktop/myfile.txt
回答by potong
This might work for you (GNU sed):
这可能对你有用（GNU sed）：
sed 'y/:/\n/' file
or perhaps:
也许：
sed y/:/$"\n"/ file
