我有一个包含许多行的文件，但每行的长度都很短。
如何在bash中以多列格式打印该文件？
该文件如下所示：
This is the first line haha.
second line
third line
first line of second paragraph
hahahahahaha
yayayayayaya
This is the third paragraph.
3-1. random random random
3-2. random random
3-3. random random random
3-4. random random random random
3-5. random random random
3-6. random
3-7. random random random
3-8. random random
3-9. random random
3-10. random
3-11. random random random
3-12. random random
3-13. random
This is the fourth paragraph.
4-1. random random random
4-2. random random
4-3. random random random
4-4. random random random random
4-5. random random random
4-6. random
4-7. random random random
4-8. random random
4-9. random random
4-10. random
4-11. random random random
4-12. random random
4-13. random
如您所见，每条线的宽度都很短。
我希望以下面的格式打印该文件：
$> cat sample.txt -n 3
This is the first line haha. This is the third paragraph. This is the fourth paragraph.
second line 3-1. random random random 4-1. random random random
third line 3-2. random random 4-2. random random
3-3. random random random 4-3. random random random
first line of second paragraph 3-4. random random random random 4-4. random random random random
hahahahahaha 3-5. random random random 4-5. random random random
yayayayayaya 3-6. random 4-6. random
3-7. random random random 4-7. random random random
3-8. random random 4-8. random random
3-9. random random 4-9. random random
3-10. random 4-10. random
3-11. random random random 4-11. random random random
3-12. random random 4-12. random random
3-13. random 4-13. random
答案 0 :(得分：1)
此脚本可以使用。它确实：
确定最长行和最长段落
将每个段落放在一个文件中，并为每一行添加空格，使其包含与最长行一样多的字符。
在文件中添加新行，直到它们的长度相同。
使用tr并排打印。
这是一个仅限bash的脚本：
#!/bin/bash
#get input file name
input="$1"
#count paragraphs starting at 1
paraNr=1
#what is the longest line in the file
longestLine=$(($(cat "$input" | wc -L) + 1))
paraFile=$(tempfile)
maxLength=0
currentLength=0
while read -r line;
do
if [ -z "$line" ]
then
paraNr=$((paraNr+1))
if [[ "$currentLength" -gt "$maxLength" ]]
then
#determine longest paragraph to later put in empty lines in shorter paragaphs
maxLength=$currentLength
currentLength=0
fi
else
length=${#line}
paddLength=$(($longestLine-$length))
padding=$(printf ' %.0s' $(seq 1 "$paddLength"))
echo "$line$padding" >> $paraFile.$paraNr
currentLength=$((currentLength+1))
fi
done < "$input"
files=""
#maxLength=0
for i in $(seq 1 $paraNr)
do
current=$(cat "$paraFile"."$i" | wc -l)
add=$(($maxLength-$current))
for x in $(seq 0 $add)
do
padding=$(printf ' %.0s' $(seq 1 "$longestLine"))
echo "$padding" >> $paraFile.$i
done
files="$files $paraFile.$i"
done
pr -t -J -m -S"" $files
使用您的输入文件，它将输出：
./s.sh input.txt
This is the first line haha. first line of second paragraph This is the third paragraph. This is the fourth paragraph.
second line hahahahahaha 3-1. random random random 4-1. random random random
third line yayayayayaya 3-2. random random 4-2. random random
3-3. random random random 4-3. random random random
3-4. random random random random 4-4. random random random random
3-5. random random random 4-5. random random random
3-6. random 4-6. random
3-7. random random random 4-7. random random random
3-8. random random 4-8. random random
3-9. random random 4-9. random random
3-10. random 4-10. random
3-11. random random random 4-11. random random random
3-12. random random 4-12. random random
3-13. random 4-13. random
答案 1 :(得分：0)
使用pr可以解决此问题。
$> pr -t -3 -w 120 sample.txt | expand
This is the first line haha. 3-5. random random random 4-3. random random random
second line 3-6. random 4-4. random random random random
third line 3-7. random random random 4-5. random random random
3-8. random random 4-6. random
first line of second paragraph 3-9. random random 4-7. random random random
hahahahahaha 3-10. random 4-8. random random
yayayayayaya 3-11. random random random 4-9. random random
3-12. random random 4-10. random
This is the third paragraph. 3-13. random 4-11. random random random
3-1. random random random 4-12. random random
3-2. random random This is the fourth paragraph. 4-13. random
3-3. random random random 4-1. random random random
3-4. random random random random 4-2. random random
参数说明：
pr -3：三列
pr -t：没有头尾标语
pr -w 120：行长度为120字符
expand：将标签替换为空格
如果您想要另一个方向，可以使用-l 1。
$> pr -l 1 -t -3 -i -w 120 sample.txt | expand
This is the first line haha. second line third line
first line of second paragraph hahahahahaha
yayayayayaya This is the third paragraph.
3-1. random random random 3-2. random random 3-3. random random random
3-4. random random random random 3-5. random random random 3-6. random
3-7. random random random 3-8. random random 3-9. random random
3-10. random 3-11. random random random 3-12. random random
3-13. random This is the fourth paragraph.
4-1. random random random 4-2. random random 4-3. random random random
4-4. random random random random 4-5. random random random 4-6. random
4-7. random random random 4-8. random random 4-9. random random
4-10. random 4-11. random random random 4-12. random random
4-13. random