Visit Our UNIX and Linux User Community


Clear Screen Command for BASH shell


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Clear Screen Command for BASH shell
# 1  
Old 01-21-2010
Clear Screen Command for BASH shell

I am unable to use clear or cls command on bash shell. I have recently installed Cygwin and am using that for practicing unix commands.

I see that I can use Ctrl + L to clear the screen. I created an alias in my .bashrc to do the same as
alias cls='^L'

This is how i defined other aliases e.g.
alias ll='ls -l'
alias la='ls -a'

and they work. Hence I assume cls will work too but this is what I get when I try to give cls on command prompt. Am i missing something? Is there a way to do this?

$ cls
bash: $'\f': command not found
# 2  
Old 01-21-2010
You cannot alias keystrokes to commands or vice versa. You could just alias cls to an echo command: echo -en "\x0c"
# 3  
Old 01-21-2010
Hi Corona688,

I did the following as suggested by you,

alias cls='echo -en "\x0c"'

Sourced the .bashrc file. No errors but cls still does not clear the screen.
Infact when I typed the echo -en "\x0c on command prompt as well, nothing happened.
What does this command do? Could you explain in detail as well. Thanks much
# 4  
Old 01-21-2010
Does clear not work?
# 5  
Old 01-21-2010
Nope, Clear is not recognized. I get command not found error.
I thought maybe I missed a package while installing Cygwin. Please help

---------- Post updated at 09:37 PM ---------- Previous update was at 07:54 PM ----------

Installing ncurses package from Cygwin.com worked for me!!!
This User Gave Thanks to erora For This Post:

Previous Thread | Next Thread
Test Your Knowledge in Computers #433
Difficulty: Easy
JSON, or JavaScript Object Notation, is a general-purpose data interchange format that is defined as a subset of JavaScript's object literal syntax.
True or False?

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Help with bash escaping while using screen command

Hello, everyone. I'm currently trying to write a command system for a Minecraft server using screen. Here are the scripts I'm currently using. 0.sh #!/bin/bash screen -S Test114 -dm java -Xmx4G -jar server.jar nogui 1.sh #!/bin/bash args="$@" args2="${args@Q}" #args3=`printf '%q\n'... (2 Replies)
Discussion started by: Develon
2 Replies

2. UNIX for Dummies Questions & Answers

Which of the following command displays your login shell in bash shell?

Options:: A)$shell B)echo $ bash C)echo $ O D)$ O (1 Reply)
Discussion started by: raghugowda
1 Replies

3. Shell Programming and Scripting

CLEAR THESE Doubts Please ( bash scripts )

gnu.txt-----example file name 1. Display the 15th line of gnu.txt. 2. Display all lines of gnu.txt where the first and third fields are the same. 3. Display all lines of gnu.txt that have more than 100 fields. 4. Display the total number of lines in gnu.txt. 5. Display all lines in... (1 Reply)
Discussion started by: venkatesh B
1 Replies

4. Shell Programming and Scripting

Clear specific part of the screen

I want to clear specific part of the screen. Say for example , i am running a bash script for i in {1..100} do echo "Current Record = $i" done if i use a clear command over there , it will clear my screen however when i scroll up i would have the old records , is there anyway in unix to... (5 Replies)
Discussion started by: chidori
5 Replies

5. Red Hat

command line tool to disable screen lock and/or screen saver

Hi, I have a simple question : how to disable screen lock and/or sreen saver with command line with RHEL5.4 ? (1 Reply)
Discussion started by: albator1932
1 Replies

6. Programming

how to clear screen in GDB session

hi , Could any one tell me the command for clearing the screen in GDB session (1 Reply)
Discussion started by: useless79
1 Replies

7. Shell Programming and Scripting

Clear screen in NAWK

Hello guys, I wonder if it is possible to clear out the screen in AWK. I'm printing out mail messages and I would like every message starting on the beginning of the screen. When I use FOR loop and printf("\n") it clears out the screen but my text is somewhere in the middle of the screen. ... (2 Replies)
Discussion started by: petoSVK
2 Replies

8. Programming

clear screen in g++

How do I clear screen in g++ I've included curses and tried compile with lcurses as per gcc but fails, I can clear by using system("clear") but would prefer to use the curses library if possible. (2 Replies)
Discussion started by: gefa
2 Replies

9. Programming

clear screen

what is the syntax for clearing the screen in c ? when i tried "Clrscr()" the CC complier does not reconise it. please do tell me more about this. thanking you imma (6 Replies)
Discussion started by: immanuelgangte
6 Replies

10. Programming

How to clear screen

I searched the post and someone said to clear the screen in C, use printf("\033[2J"); ?? However, this doesn't work...typo or no. What is an equivalent command to 'CLS' in DOS/'clear' in UNIX to clear the screen and go to top of screen?? Thank you. (2 Replies)
Discussion started by: giannicello
2 Replies

Featured Tech Videos