将大文本文件重新格式化为一个行字符串（通过BASH）

Question

File1中：

hello
- dictionary definitions:
hi
hello
hallo
greetings
salutations
no more hello for you
-
world
- dictionary definitions:
universe
everything
the globe
the biggest tree
planet
cess pool of organic life
-

我需要将此格式（对于大量单词列表）格式化为术语到定义格式（每个术语一行）。怎么能实现这个目标？没有一个词是相同的，只有上面看到的结构。结果文件看起来像这样：

hello    - dictionary definitions:    hi    hello    hallo    greetings    salutations    no more hello for you    -
world    - dictionary definitions:    universe    everything    the globe    the biggest tree    planet    cess pool of organic life    -

Awk / Sed / Grep / Cat是常见的竞争者。

Answer 1

awk 'BEGIN {FS="\n"; RS="-\n"}{for(i=1;i<=NF;i++) printf("%s   ",$i); if($1)print"-";}' dict.txt

输出：

hello   - dictionary definitions:   hi   hello   hallo   greetings   salutations   no more hello for you   -
world   - dictionary definitions:   universe   everything   the globe   the biggest tree   planet   cess pool of organic life   -

Answer 2

谁说只有Perl可以优雅地做到这一点？ ：）

$ gawk -vRS="-\n" '{gsub(/\n/," ")}1' file
hello - dictionary definitions: hi hello hallo greetings salutations no more hello for you
world - dictionary definitions: universe everything the globe the biggest tree planet cess pool of organic life

OR

# gawk 'BEGIN{RS="-\n";FS="\n";OFS=" "}{$1=$1}1'  file
hello - dictionary definitions: hi hello hallo greetings salutations no more hello for you
world - dictionary definitions: universe everything the globe the biggest tree planet cess pool of organic life

Answer 3

perl one-liner：

perl -pe 'chomp;s/^-$/\n/;print " "' File1

给出

 hello - dictionary definitions: hi hello hallo greetings salutations no more hello for you
 world - dictionary definitions: universe everything the globe the biggest tree planet cess pool of organic life 

这就像'你需要的输出'。

Answer 4

不确定您将使用的脚本语言，伪代码在这里：

for each line
 if line is "-"
  create new line
 else
  append separator to previous line
  append line to previous line
 end if
end for loop

Answer 5

尝试这个衬垫适用于一个单词

总是6行的条件

sed 'N;N;N;N;N;N;N;N;s/\n/ /g' test_3

Answer 6

sed -ne'1{x;d};/^-$/{g;s/\n/ /g;p;n;x;d};H'
awk -v'RS=\n-\n' '{gsub(/\n/," ")}1'