Linux换行符的使用方法详解

cat -A myfile.txt

Hello World$

Hello World^M$

od -c myfile.txt

0000000   H   e   l   l   o       W   o   r   l   d  \n

0000000   H   e   l   l   o       W   o   r   l   d  \r  \n

dos2unix myfile.txt

sed -i 's/\r$//' myfile.txt

cat myfile.txt | tr -d '\r' > newfile_unix.txt

unix2dos myfile.txt

sed -i 's/$/\r/' myfile.txt

awk '{print $0 "\r"}' myfile.txt > newfile_windows.txt

echo -e "Line 1\nLine 2\nLine 3"

Line 1
Line 2
Line 3

printf "Line 1\nLine 2\n"

echo "Hello World" | sed 's/ / \n/g'

Hello
World

echo "Hello World" | awk '{print $1 "\n" $2}'

#!/bin/bash
while IFS= read -r line; do
    echo "Processing: $line"
done < myfile.txt

sed -i '/^$/d' myfile.txt

或

awk 'NF' myfile.txt > clean_file.txt

grep -c '^' myfile.txt

或

wc -l myfile.txt

echo "New Entry" >> myfile.txt

echo -n "New Entry" >> myfile.txt

tail -c1 myfile.txt | od -c

mytext="Line 1
Line 2
Line 3"

echo "$mytext"

cat <<EOF > myfile.txt
This is line 1.
This is line 2.
EOF

sed -i 's/\r$//' myfile.txt

vim myfile.txt

:set fileformat=unix
:wq