Bash: add string to the end of the file without line break

You can use the -n parameter of echo. Like this:

$ touch a.txt$ echo -n "A" >> a.txt$ echo -n "B" >> a.txt$ echo -n "C" >> a.txt$ cat a.txtABC

EDIT: Aha, you already had a file containing string and newline. Well, I'll leave this here anyway, might we useful for someone.

linux bash awk echo cat

Just use printf instead, since it does not print the new line as default:

printf "final line" >> file

Let's create a file and then add an extra line without a trailing new line. Note I use cat -vet to see the new lines.

$ seq 2 > file$ cat -vet file1$2$$ printf "the end" >> file$ cat -vet file1$2$the end

linux bash awk echo cat

sed '$s/$/yourText2/' list.txt > _list.txt_ && mv -- _list.txt_ list.txt

If your sed implementation supports the -i option, you could use:

sed -i.bck '$s/$/yourText2/' list.txt

With the second solution you'll have a backup too (with first you'll need to do it manually).

Alternatively:

ex -sc 's/$/yourText2/|w|q' list.txt

perl -i.bck -pe's/$/yourText2/ if eof' list.txt

CodeHunter