缺失换行符? [英] Missing newline character?
问题描述
我从HDFS复制了一个文件到我的本地文件系统(全部在RH linux上)。但是,复制后,如果我 cat
该文件,我会看到以下内容:
[me @ ac12〜] $ cat file_copy
0 | name | string
1 | phone | string
2 | age | string [me @ ac12〜] $
我所期望的是:
[me @ ac12〜] $ cat file_copy
0 | name | string
1 | phone | string
2 | age | string
[me @ ac12 〜] $
您可以看到第一只猫似乎缺少换行符,而shell提示与最后一行位于同一行。为什么会这样,我该如何诊断问题?编辑:我不能编辑输出文件(嗯,也许我可以但我真的不想要 - 我宁愿在源头解决问题)。我想知道为什么没有换行符。
您可以使用 sed
在最后一行后添加换行符:
sed -i.bak $'$ s / $ / \\ / file_copy
编辑:
或者使用(感谢@JonathanLeffler):
echo''>> ; file_copy
I've copied a file from HDFS into my local file system (all on RH linux). However, after the copy, if I cat
the file, I see the following:
[me@ac12 ~]$ cat file_copy
0|name|string
1|phone|string
2|age|string[me@ac12 ~]$
What I expected was this:
[me@ac12 ~]$ cat file_copy
0|name|string
1|phone|string
2|age|string
[me@ac12 ~]$
You can see that a newline seems to be missing in the first cat, and the shell prompt is on the same line as the last line. Why would this be and how can I diagnose the issue?
EDIT: I can't edit the output file (well, maybe I could but I really don't want to - I'd rather fix the problem at the source). I want to know why there is no newline character..
You can use this sed
to add a newline after last line:
sed -i.bak $'$s/$/\\n/' file_copy
EDIT:
Or else use (thanks to @JonathanLeffler):
echo '' >> file_copy
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