bash script isnt working

Question

I have written this simple type alias script in my bin directory in home

#!/bin/sh
alias kp='ls –L'
alias ldir='ls –aF'
alias copy='cp'

and saved it in the name myenv. Then I have changed the mode using

chmod +x /bin/myenv

then execute it using the command

myenv

but after this when I use kp it says kp command not found. Why?

This answer is not clear. You should add more info and details to it. — na-no., Nov 10 '17 at 16:35
@Bajiru you commented under question. s/answer/question/ maybe ? — Sergiy Kolodyazhnyy, Nov 10 '17 at 16:47

score 2 · Answer 1 · answered Jun 24 '13 at 08:17

Your script runs in a sub-shell by default. (It opens a new shell and runs your script. After the script has finished running, its modified environment is destroyed.)

If you'd like to change your current shell environment settings you have to:

source myenv

or:

. myenv

See man bash Shell Builtin Commands / Source.

score 0 · Answer 2 · edited Apr 13 '17 at 12:24

0

First, because – character that you used in alias kp='ls –L' and alias ldir='ls –aF' is not the same with - (you can see that is a little bit longer). Try:

#!/bin/sh
alias kp='ls -L'
alias ldir='ls -aF'
alias copy='cp'

Just copy and paste from above.

Second, if you want that the script to have the expected effect, just put this line in ~/.bashrc file:

source /bin/myenv

Anyway, the best way to create aliases in Ubuntu is to use this method: https://askubuntu.com/a/5278/147044.

edited Apr 13 '17 at 12:24

Community

1

answered Jun 24 '13 at 08:20

Radu Rădeanu

169,590

Thanks.. But creating alias isnt my goal. I am just learning to create shell scripts – Tamim Addari Jun 24 '13 at 08:38

bash script isnt working

2 Answers2