Append text to file from command line without using io redirection
If you don't mind using sed then,
$ cat test this is line 1$ sed -i '$ a\this is line 2 without redirection' test $ cat test this is line 1this is line 2 without redirection
As the documentation may be a bit long to go through, some explanations :
-imeans an inplace transformation, so all changes will occur in the file you specify$is used to specify the last lineameans append a line after\is simply used as a delimiter
If you just want to tack something on by hand, then the sed answer will work for you. If instead the text is in file(s) (say file1.txt and file2.txt):
Using Perl:
perl -e 'open(OUT, ">>", "outfile.txt"); print OUT while (<>);' file*.txt
N.B. while the >> may look like an indication of redirection, it is just the file open mode, in this case "append".
You can use Vim in Ex mode:
ex -sc 'a|BRAVO' -cx fileaappend textxsave and close