8
votes
3answers
331 views

Replace multiple spaces with one using 'tr' only

I have a file, f1.txt: ID Name 1 a 2 b 3 g 6 f The number of spaces is not fixed. What is the best way to replace all the white spaces with one space using only tr? ...
3
votes
2answers
370 views

How can I print out all but the last n characters in bash?

I'm working with standard input (cating two files together) and want all but the last 10 characters of the result to be passed through the next command. All I can find through searching is using sed, ...
3
votes
4answers
356 views

Piping paths with different types of quotes for slash substitution

I would like to use sed to convert a path with backslashes to the same path with forward slashes: E.g. I would like to pipe \\path\to\file\ and obtain /path/to/file None of the following commands ...
5
votes
2answers
14k views

Removing all spaces, tabs, newlines, etc from a variable?

This is the error I am getting and it's failing because of a variable whose value is supposed to be 2 (I am getting this using a select * from tabel). I am getting spaces in that variable. + 0 != ...
2
votes
3answers
894 views

Is there a tr for translating into longer strings?

tr is great for translating a set of characters to another set of characters. Sometimes, I want to translate a set of characters to a set of strings, e.g. all < and > to &lt; and &gt;. ...