HowTo: Add Pause Prompt In a Shell Script ( bash pause command )

Posted on in Categories Linux, OS X, RedHat/Fedora Linux, Shell scripting, Suse Linux, Tips, UNIX, Windows last updated March 4, 2007

Most of you may be aware of old good DOS/2000/XP pause command. It is used display the prompt while suspending processing of a batch script. It is used within a computer batch file and allows the computer to pause the currently running batch file until the user presses any key.

bash pause command – under Linux / UNIX

There is no pause command under Linux/UNIX bash shell. You can easily use the read command with the -p option to display pause along with a message:

read -p "Press [Enter] key to start backup..."

The above will suspends processing of a shell script and displays a message prompting the user to press [Enter] key to continue.

bash shell pause function

You can create a function as follows:

#!/bin/bash
# init
function pause(){
   read -p "$*"
}
 
# ...
# call it
pause 'Press [Enter] key to continue...'
# rest of the script
# ...

Original DOS/XP pause command is an internal command. Use above technique if you are migrating from DOS/Windows batch file scripting.

Posted by: Vivek Gite

The author is the creator of nixCraft and a seasoned sysadmin and a trainer for the Linux operating system/Unix shell scripting. He has worked with global clients and in various industries, including IT, education, defense and space research, and the nonprofit sector. Follow him on Twitter, Facebook, Google+.

29 comment

  1. One small tip,
    If you do this in a while loop that reads from a file.
    e.g.
    while read line
    do
    …..
    read -p somevar
    …..
    done < somefile

    It will not work as expected, as the input for the while loop is “somefile”, so the “read -p ” inside the loop will read a line from somefile, instead of standard input.

    To solve this you can use file descriptors.

    so

    exec 5

  2. If you need an exact replacement for PAUSE you need to use:
    read -n 1 -p prompt
    without -n, read will require the ENTER key.
    I’m not sure but -n may be a bash specific.

  3. read -p “Press any key”. doesn’t provide the ‘pause’ behavior.

    It requires ‘ENTER’ key to be pressed, so it becomes, ‘press ENTER key’ instead of ‘press any key’.

  4. Using simply read to pause>nul can be quite useful too.

    I ran into the need for pause in this simple bash script, where I pass a website as argument and the script tells me the password to the site from my personal password file. Note: one site and one password on each line, file mode should be 600.
    The script is useful to have on my webserver which is always on and I can reach from work or anywhere whenever I need it.

    #!/bin/bash
    cat ~/my_passwords.txt | grep $1; read; clear;

    Hope this helps someone 🙂

  5. Lifesaver. Thankyou. 🙂

    (I needed to put in a “are you sure” message for windows users to be able to run scripts on a Linux box… who knows if it will help, but hey, at least it’s a start.)

  6. I believe the following is at least very close to the behavior of the pause command.


    function pause(){
    read -s -n 1 -p "Press any key to continue . . ."
    echo
    }

  7. read is a good choice for pausing but, sometimes we are looking for - pause then continue command without user interference so i guess sleep is more realiable

  8. echo “Press any Key to continue”
    read -n1 -t5 any_key

    -n1 -> number of character it can read
    -t5 -> it will wait for 5 seconds the user to enter a char after 5 sec it will resume the flow

  9. Hi,
    I have one unix script file that has one command to execute a java program. That Java program is used to download a file from a server. After this command I have different commands (“hdiutil checksum -type CRC32 “) to execute on the downloaded file. My problem is that after executing the java command it is not waiting for the file to be downloaded from the server and executing that command and fails because still that file is not downloaded.

    Can someone help me to resolve this issue. How should I wait fro the file to be downloaded then only it should execute the other commands?

    Please help me to get out in to this situation as soon as possible…

  10. for anyone writing any cli based php scripts, and who doesnt feel like installing the whole ncurses package JUST to get the ‘press enter to continue…’ functionality…

    this method works great via

    system(‘read…..

    thanks! +5

  11. Thanks for script, I put it at the end of a function and it is helpful. How would I call a function when Enter is pressed? I tried the following but it didn’t work:

    function pause(){
    read -p “$*”
    Function_1
    }
    pause “Enter to continue…”

  12. I want to write a program which pause execution when i enter “return key ” and start execution when i again enter “return key ” from where it is paused.
    Please help me.

  13. The code worked except the comment should read “Press the ENTER key to continue…”.
    Thank you!

  14. This code worked for me well!

    I am looking to pause the script multiple times. So, I used multiple pause statements after every 10 lines. It didn’t work.

    Does anyone know why?

    Thanks.

  15. There is a way to cleanly do that on Linux:

    #!/bin/sh

    echo -n “Press any key to continue…”
    stty -echo
    dd count=1 1>/dev/null 2>&1
    stty echo
    echo

    Best regards,

  16. Sorry, previous one don’t properly works.
    This do the job:

    #!/bin/sh
    …
    echo -n “Press any key to continue…”
    CFG=`stty -g`
    stty -echo -icanon
    dd count=1 1>/dev/null 2>&1
    stty $CFG
    echo

    Regards,

  17. And a simple way:

    #!/bin/bash
    …
    read -s -n 1 -p “Press any key to continue…”
    echo

    Regards,

  18. I would like to know how to STOP a program from pausing in the console. It happens all the time. I run a script, minimize the console, then check on it later and found that it has got stuck in a process. I maximize the window and the process resumes. I’ve had this issue for years. It seems to be some bug within BASH.

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