I want to clearscreen from bash in a cygwin terminal. I have tried
cmd /c cls
echo -e "^V^L"
echo -e "\014"
None of these work - they all give a "linefeed". Pressing CTRL+L does work - but I want to call it from a Bash script.
Any ideas?
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@Mat: This has the same effect as Ctrl+L, it only pushes the text up off the screen but doesn't clear itHXCaine– HXCaine2013-03-24 13:08:12 +00:00Commented Mar 24, 2013 at 13:08
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1tput mentioned below should be part of ncurses.mikyra– mikyra2013-03-24 13:31:20 +00:00Commented Mar 24, 2013 at 13:31
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The Control-L character (which is formfeed, not linefeed) typically doesn't do anything when printed on vt100-like terminal emulators.Keith Thompson– Keith Thompson2013-09-25 22:29:28 +00:00Commented Sep 25, 2013 at 22:29
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See also stackoverflow.com/q/11249070/1207769ctrueden– ctrueden2014-02-22 12:58:14 +00:00Commented Feb 22, 2014 at 12:58
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possible duplicate of Clear the Ubuntu bash screen for realSandeep Datta– Sandeep Datta2015-02-13 11:56:16 +00:00Commented Feb 13, 2015 at 11:56
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7 Answers
Or you could try ctrl-L :)
That should work in most emulated terminals as well.
3 Comments
Keith Thompson
From the question: "Pressing CTRL+L does work - but I want to call it from a Bash script."
Ruan Mendes
CTRL+L seems to only scroll away the old content, not remove it like ALT+F
gNU.be
Wow this answer sure is paying the bills! Sheesh, I wonder what "sudo !!" would get me.
There is two ways:
Using shortcuts
Alt+F8 to clear screen and Ctrl-L to skip page
Using Clear alias
- Go to:
cygwin\home\USER\.bashrc - Open
.bashrcfile and put this aliasalias clear='printf "\033c"'. - restart your cygwin terminal.
- to clear your screen use
clearcommand.
1 Comment
Keith Thompson
From the question: "Pressing CTRL+L does work - but I want to call it from a Bash script."
If it's contained in your cygwin install (run Cygwin's setup and make sure you have the package called "ncurses"), try
tput clear
1 Comment
MickLH
The real answer here is: install ncurses, then the "normal" clear command does work as Keith said.
I have this in my ~/.bashrc:
alias clear='printf "\033c"'
likewise, printf "\033c" clears the screen from within a bash script.
1 Comment
mbokil
Clever solution. Just added it to my .bashrc
Alt+F8 to clear screen and Ctrl-L to skip page
Comments
Using shortcuts (for mitty console users)
Alt+F8 to clear screen and Ctrl-L to skip page
Using sh bash adding a command
If you use console2 or same consoles, you can add this sh code as without extension this location : ..\cygwin64\bin\
cls and /or clear (without extension)
#!/bin/sh
printf "\033c"
Then you can use cls and|or clear in cygwin command.
Comments
I was trying to do something similar and upon researching I found the above answers, I tried to follow some of the above solutions, I added the line to .bashrc, but it did not accept the function, I tweaked around and found out another solution...it basically executes the ' printf "\33c" but instead of tweaking the .bash.rc file, you simply go to the directory - /cygwin/bin , Write the following command :- printf "\033c" And save it with the filename "cls" , in the bin directory, ensure that there is NO EXTENSION to the file, thus it will have the type "file" ..save it,open the shell and the command will run...
I found this method by playing around with msys and cygwin, I have both on my windows PC and turns out msys supports the "cls" command, I found a file with the same name in it's bin directory and copied it to the cygwin's bin folder and edited the file with the printf function and this worked like a charm...hope this helps.
