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To check the size in megabytes I have always to do --block-size=Mb. Can I set in bashrc so that when I do ls it should alway publish size in Mb?

1

Alias it:

alias ls="ls --block-size=Mb"

But do you really want to always see file sizes in MB?

0

Add the following line to your .bashrc file

alias ls="ls --block-size=Mb"

Then logout and log back in. ls should now have the desired flags

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