HowTo: Create Files in Linux From a Bash Shell Prompt

Posted on in Categories , , last updated September 19, 2013

I‘m a new to CentOS Linux user. How do I create a file from bash prompt without using GUI tools?

Linux / UNIX like operating system offers many command line tools and text editors for creating text files. You can use vi or joe text editor. It is a terminal-based text editor for Linux/Unix like systems, available under the GPL. It is designed to be easy to use. In short, you can use any one of the following tool:

  1. cat command
  2. echo or printf command
  3. vi text editor
  4. joe text editor
  5. Any other console based text editor

Create a Text File using cat command

To create a text file called foo.txt, enter:
$ cat > foo.txt
Output:

This is a test.
Hello world!
press CTRL+D to save file

To display file contents, type:
$ cat foo.txt

Create a text file using echo or printf

To create a file called foo.txt, enter:

echo 'This is a test' > foo.txt

OR

printf 'This is a test\n' > foo.txt

OR

printf 'This is a test\n Another line' > foo.txt

To display file contents, type:
$ cat foo.txt

Create a Text File using joe text editor

JOE is text editor. To create a file called foo.txt, type:
$ joe -help foo.txt
You will see help menu on screen. Next type something. To save the file and leave joe, by typing ^KX (press CTRL+K+X).

Create a Text File using vi / vim text editor

vi / vim is another text editor. To create a file called bar.txt, type:
$ vi bar.txt
Press ‘i’ to insert new text. To save the file and leave vi, type ESC+:+x (press ESC key, type : followed by x and [enter] key).

Further readings
  • Learn more about joe here : Introduction to the Joe Text Editor
  • Learn more about vi here : Download mastering the VI editor pdf version.

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+.

Share this on:

44 comment

    1. basically i m beginner could please give me any links or book to understand linux architecture, well i m also confused in using linux commands since there r so many option is there any web which explains how to use linux commands
      thanks in advance.

      Reply Report comment

  6. Detailed information but would appreciate if someone can upload the solution for cat command as in executing or running the vi program. I am writing a finction in the vi and want to execute it outside the vi on the bash shell.

    Thx- Nitish Anand

    Reply Report comment

  7. thanks guys. i do try cat, it works perfectly.
    but in vi mode i’m not able to save & exit the file. i had to exit using ctrl+z & the file was not saved.
    please help me. mail on [email protected]

    Reply Report comment

  9. have two files, ‘file1’ and ‘file2’.
    file1 has:
    1234
    4567
    6789

    file2 has:
    abcd
    efgh
    ijkl

    would like to combine into one like:
    1234 | abcd
    4567 | efgh
    6789 | ijkl

    Please give direction.

    Thanks

    Reply Report comment

    1. Hi,
      @chakjoy

      here is an solution. Using arrays:
      —
      #!/bin/bash
      declare -a ARRAY1
      declare -a ARRAY2
      let count=0
      let count1=0
      while read LINE
      do
      ARRAY1[$count]=$LINE
      ((count++))
      done < file1.txt
      while read LINE
      do
      ARRAY2[$count1]=$LINE
      ((count1++))
      done < file2.txt
      for((i=0; i<${#ARRAY1[@]};i++));do
      echo "${ARRAY1[${i}]} | ${ARRAY2[${i}]}"
      done
      —

      I hope this help.

      Reply Report comment

  10. Hi chakjoy,

    Did u manage to resolve your problem? Try the folling link if thats what you meant:-

    http://www.linuxsa.org.au/tips/command-pipelines.html

    OR

    cd /var/log && ls -al
    this switches to the /var/log directory if the directory change was sucessfuly it will then list the contents of that directory.

    You can also list the contents of a directory without leaving your current location..

    ls -al /var/log
    Would list the contents of /var/log no matter your current location in the directory tree.

    You can also use | to send the output of one command to the input of another..

    mount | column -t
    Show mount points in a column format

    ls -al | grep *.jpg
    List the contents of a directory buit only show files ending in .jpg

    ps aux | grep X11
    List processes but only show processes containing X11 > and list.txt
    Will list the contents of the /var/log directory and save it in the file list.txt

    hope this helps

    ====================

    You can chain copmmands together using &&

    cd /var/log && ls -al
    this swithces to the /var/log directory if the directory change was sucessfuly it will then list the contents o fhte directory.

    just to add to that, you can likewise chain commands together with the || operator (OR operator, not to be confused with a pipe | )

    Code:
    $ cd /mnt || cd /varthis would attempt to change to the /mnt directory. If it could not it would then switch to the /var directory. If the cd /mnt command was successfull then it would stop. Similarly,

    Code:
    $ cd /blah || cd /homeit’s probably safe to say there is no /blah directory on your computer so typing this command would attempt to change to a non-existant directory, fail, and consequently change to /home
    have fun!

    Reply Report comment

  27. I am trying to maintain a list of “ROMS” be it NDS, or MAME, no matter.
    Instead of accessing each page on a website, is it possible to use cat to look for say; title” … ” within .aspx on the website and copy it to local txt file ? I have been using ..
    cat wordlist/* | tr -cs A-Za-z ’12’ | tr A-Z a-z | sort | uniq > wordlist/masterlist.txt to merge numerous txt files into one, have them sort, and no repeats. something like this to be able to input the website start & end page and where to save the roms list.. there doesn’t really seem to be any 1 site that has a complete & accurate list. I an not trying to circumvent anything to get to the roms, I merely wish to be able to goto a webpage, enter in the variables, run a script to gather the list from the site, then after I have done this to a few sites run the above quoted, to merge the different sites into 1 ( hopefully ) accurate list so I know the names & numbers of the roms for each list.

    Reply Report comment

  29. hey guys, how can I concatenate an echo command & DATE to only one line ..

    like:
    echo “The date is: ” && date >> file.txt

    but this command will display text “The date is: ” and insert the date into the file.txt

    the output I want is

    “The date is 07-12-12.”

    to the file.txt

    help pls..

    Reply Report comment

  35. I am doing with my BS Computer Science, I am provided with a project to make a

    A_primitive linux shell using terminal of Ubuntu or GNU (GCC) compiler and in it i have to set up a shell environment to use the following commands
    1 cd
    2 ls
    3 pwd
    4 pop
    5 push

    B_ using any technique within this file system to make a single file password protected.

    Noted: Can’t use ‘system’ or ‘exe’ command but can use libC and its assorted libraries also can use dirent.h,ctype.h.
    please please please help me with this having said that i have to submit it on monday 9th March,2015

    Reply Report comment

Leave a Comment

Tagged as: Tags , , , , , , , , , ,