antlr4 alias not persisting

Question

I'm trying to set up Antlr 4.5 as per the instructions here but the alias isn't accessible from where I've put my project after a reboot, which makes me wonder if I've done the classpath step correctly.

The tutorial says to add export CLASSPATH=".:/usr/local/lib/antlr-4.5-complete.jar:$CLASSPATH" to .bash_profile or whatever my startup script is.

After finding that .bash_profile didn't exist on my system I discovered that the Ubuntu equivalent is apparently .profile. As a result I put that line on the end thinking that was right.

But the aliases don't survive the reboot either, so what am I missing? do I need to add the following to .profile too?

alias antlr4='java -Xmx500M -cp "/usr/local/lib/antlr-4.5-complete.jar:$CLASSPATH" org.antlr.v4.Tool'
alias grun='java org.antlr.v4.runtime.misc.TestRig'

score 1 · Accepted Answer · answered May 05 '15 at 11:56

1

I'd put both your export definitions and the alias commands to your .bashrc.

answered May 05 '15 at 11:56

Sylvain Pineau

62,169

I've heard mixed reports about editing .bashrc most saying not to edit it. so i'm a bit confused as to why you would edit it when most say not to. and what's the difference between it and .profile or .bash_profile – Force Gaia May 05 '15 at 11:59
@ForceGaia Check How do I create a permanent Bash alias? – Sylvain Pineau May 05 '15 at 12:09
1

@ForceGaia nobody says not to edit .bashrc. If anyone does, they don't know what they're talking about. .profile is not read by most shells (for more detail than you probably want, see here), the correct file to edit is ~/.bashrc. – terdon May 05 '15 at 12:12
I must have been confused by something then – Force Gaia May 05 '15 at 12:13
alias works now but my makefile isn't picking up on it for some reason – Force Gaia May 05 '15 at 12:23
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@ForceGaia It's hard to tell what's causing it. Could you please create a new question for your Makefile issue explaining/detailing what you're trying to achieve and which commands are failing? – Sylvain Pineau May 05 '15 at 12:28
solved it. one of my tutors had a means i wasn't expecting - an executable shell script that make could pick up – Force Gaia May 05 '15 at 17:03

antlr4 alias not persisting

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