Linked Questions
17 questions linked to/from How to add a newline to the end of a file?
685
votes
4
answers
301k
views
Why is printf better than echo?
I have heard that printf is better than echo. I can recall only one instance from my experience where I had to use printf because echo didn't work for feeding some text into some program on RHEL 5.8 ...
- 12.1k
74
votes
4
answers
181k
views
echo bytes to a file
I'm trying to connect my rasberry Pi to some display using the i2c bus.
To get started I wanted to manually write stuff, bytes in particular to a file.
How do you write specific bytes to a file?
I ...
- 1,119
47
votes
4
answers
59k
views
What does the noeol indicator at the bottom of a vim edit session mean?
I opened a file using vim on Ubuntu, and the following is displayed at the bottom of the screen:
"file.py" [noeol] 553L, 16620C
What does noeol indicate?
- 863
30
votes
7
answers
27k
views
Read a line-oriented file which may not end with a newline
I have a file named /tmp/urlFile where each line represents a url. I am trying to read from the file as follows:
cat "/tmp/urlFile" | while read url
do
echo $url
done
If the last line doesn't ...
- 95.9k
23
votes
5
answers
26k
views
How to cat files together, adding missing newlines at end of some files
I have a bunch of .text files, most of which end with the standard nl.
A couple don't have any terminator at end. The last physical byte is (generally) an alphameric character.
I was using cat *....
- 861
13
votes
3
answers
5k
views
How to find files that don't have empty line at the end?
I have files in subdirectories of the current directory that may or may not have new lines at the end; how can I find files that don't have a newline at the end?
I've tried this:
find . -name '*....
- 9,312
5
votes
4
answers
10k
views
Using sed, how to format one word per line, removing white space
I'm trying to replaces patterns and cleanup a file containing multiple words to get one word per line.
The result is achieved using this command line:
sed -e '/^[[:space:]]*$/ d' \ # ...
- 151
7
votes
2
answers
531
views
What is this sed doing with the script: `$a\`?
I've come upon this sed command and I cannot figure out what it is doing. I understand that it is changing a file in place using -i, that it is using a script -e and that the script is $a\, but what ...
- 175
6
votes
3
answers
3k
views
Determine whether a file has no EOL at the end from the command line
If you open a file in vim and that file has no EOL at the end of its last line, then the editor will report it as [noeol]. How can I determine this before opening it in vim? (Is there a command I can ...
- 179
2
votes
3
answers
13k
views
UNIX: Need to replace last line on the file and also remove extra blank line in the end
I need to replace - WOR to VWOR in end of the file.
I have tried
sed s/WOR/VWOR/g
But this does not work until I have new blank line in file.
So I used
( cat FileName && echo ) | ...
- 21
0
votes
1
answer
14k
views
while read loop stops after the first line even though it doesn't read from stdin [closed]
I have a file called test containing
test
test
and I am running this command
while read line
do
echo "$line"
done </tmp/test
This should output "test" two times but it only outputs it once. ...
- 11.2k
2
votes
4
answers
7k
views
Treat "\r" as nothing in "while read -r"
I have this line of code that reads a text file line by line.
The text file is sometimes generated by a Windows user, sometimes by a Unix user. Therefore, sometimes I see \r\n at the end of the line ...
- 93
3
votes
5
answers
851
views
Not able to cat a string from a file under a string of another file
I have encountered a strange issue in concatenating the files using the cat command. I have two files with one string in each of them:
file1:
ABC
file2:
DEF
Either I do cat file1 file2 or I ...
- 161
4
votes
2
answers
465
views
Is there a way to count the number of lines of text in a file including non-delimited ones?
The POSIX wc command counts how many POSIX lines in a file. The POSIX standard defines a line as a text string with the suffix \n. Without \n, a pure text string can't be called a line.
But to me, ...
- 1,716
2
votes
1
answer
1k
views
Should the last line in a configuration file have a newline after it?
I sometimes whether I should put a newline after the last line in a configuration file, especially if it is a one-line configuration file, like the hostname file.
Does it not matter, or is there a ...
- 5,239