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I have a file with some non-printable characters that come up as ^C or ^B, I want to find and replace those characters, how do I go about doing that?
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You can download Notepad++ and open the file there. Then, go to the menu and select View->Show Symbol->Show All Characters . All characters will become visible, but you will have to scroll through the whole file to see which character needs to be removed.
[3] On BSD, pipe the ls -q output through cat -v or od -c ( 25.7 ) to see what the non-printing characters are. This shows that the non-printing characters have octal values 13 and 14, respectively. If you look up these values in an ASCII table ( 51.3 ) , you will see that they correspond to CTRL-k and CTRL-l.
While in insert mode, you can insert special characters in Vim by pressing <ctrl-k> followed by a two-character lookup code. For example, <ctrl-k> ? 2 will insert the approximately equal symbol: ≈ .
Step 1: Click on any cell (D3). Enter Formula =CLEAN(C3). Step 2: Click ENTER. It removes non-printable characters.
Removing control symbols only:
:%s/[[:cntrl:]]//g Removing non-printable characters (note that in versions prior to ~8.1.1 this removes non-ASCII characters also):
:%s/[^[:print:]]//g The difference between them could be seen if you have some non-printable-non-control characters, e.g. zero-width space:
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Say you want to replace ^C with C:
:%s/CtrlVC/C/g
Where CtrlVC means type V then C while holding Ctrl pressed.
CtrlV lets you enter control characters.
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