I have this script called menal in my ~/bin directory:
#!/bin/sh
alias mendir='cd ~/projects/myproject'
It has executable property and I expect that when I run it it sets an appropiate alias for cd command for the terminal session. But it doesn't. When I type $ menal in terminal it shows no error, but when I try $ mendir after that I get
No command 'mendir' found, did you mean:
Command 'menhir' from package 'menhir' (universe)
mendir: command not found
When I type
$ alias mendir='cd ~/projects/myproject'
$ mendir
in terminal, it works.
What am I doing wrong? Is it a script scope issue or something?
Yes, it's a scope problem. Calling it the following way won't produce the result you expect:
./bin/menal
If you want the alias to persist, use source:
source ./bin/menal
You can add it to your .bash_profile.
alias mendir='cd ~/projects/myproject'
then do source ~/.bash_profile
It should create the alias and also will work on every login.
Related
I have a bash script that I would like to run globally as a command. For that I moved the script to /usr/local/bin/somefile.sh.
Now I still have to call a command called somefile.sh. I would like to have an alias for this command (for example I would just like to call the script with the command sf).
How do I do that?
And to complement answer from #Kent :
alias sf='/usr/local/bin/somefile.sh' using alias
ln -s somefile.sh /usr/local/bin/sf using soft link
mv /usr/local/bin/somefile.sh /usr/local/bin/sf using renaming
There are different ways:
as you mentioned, use alias, man alias for details
create a soft link named sf to your real script
rename your script
Open your .bashrc file located in ~/.bashrc. .bashrc file is read whenever you login to the system. Add the below line to the end of the file.
alias sf='/usr/local/bin/somefile.sh'
then re login or run source .bashrc
If you're on a GNU system, you could use the "alternatives" system:
dir=/usr/local/bin
sudo update-alternatives --install $dir/sf somefile $dir/somefile.sh 10
This creates 2 symbolic links:
/usr/local/bin/sf -> /etc/alternatives/somefile
/etc/alternatives/somefile -> /usr/local/bin/somefile.sh
According to ros wiki, to set up environment,
I typed
echo "source /opt/ros/kinetic/setup.bash" >> ~/.bashrc
source ~/.bashrc
The error is
/opt/ros/kinetic/setup.bash:.:8: no such file or directory: /home/pikashun/setup.sh
In ~/.bashrc file, there is the source /opt/ros/kinetic/setup.bash line.
I use Ubuntu on WSL.
How can I improve?
Thank you!
I had the exact same issue. The problem is not due to setup.bash either ~/.bashrc but the shell that you are using. It turned out that you may be using a different shell than bash (i.e., zsh). When you are executing the setup.bash of ROS, zsh interprets the following command (whici is in /opt/ros/kinetic/setup.bash) differently:
_CATKIN_SETUP_DIR=$(builtin cd "`dirname "${BASH_SOURCE[0]}"`" > /dev/null && pwd)
It is setting the _CATKIN_SETUP_DIR to your user directory. That is why you are getting error, cause you using the wrong path:
/home/user/setup.bash instead of /opt/ros/kinetic/setup.bash
To check whether this is the issue of your problem, you can check the shell that you are using by execute the following in the terminal:
echo $0; echo $SHELL
It may return something like:
zsh
/bin/zsh
To switch from zsh to bash, use:
exec bash
Once done this, you can use source without any problem.
And to switch back to your previous shell (assuming that is zsh), just use:
exec zsh
The file /opt/ros/kinetic/setup.bash does nothing but loading /opt/ros/kinetic/setup.sh from the same directory. I might be that you are not running bash (check which terminal you run), or that WSL has some different behavoiour than expected.
However, your can just alter your append command like so:
echo "source /opt/ros/kinetic/setup.sh" >> ~/.bashrc
or in your case, since the entry exists already in your ~/.bashrc, edit the line source /opt/ros/kinetic/setup.bash to source /opt/ros/kinetic/setup.sh
The packages or files were not actually downloaded from the "http://wiki.ros.org/melodic/Installation/Ubuntu". To overcome this error first open terminal
check your directory pwd. If your directory is like /home/'Your PC Name' it won't actually work.
Change the directory : Type cd /
Continue the installation process from start which mentioned in "http://wiki.ros.org/melodic/Installation/Ubuntu"
melodic can change to kinetic or other version if you wish
For error I have pasted:
export PATH=[...existing PATH additions]:/home/alumno/firefox/
on ~/.bashrc and now I cant access to any command, even sudo, because terminal returns: command not found.
And when the terminal is opened gives a message:
bash: export: `additions]:/home/alumno/firefox/': not a valid identifier.
I need to edit bashrc somehow. Any help, please?
You can edit the file with : "/usr/bin/vi .bashrc"
Regards!
Use absolute path for the commands.
Instead of ls, you need to call /bin/ls or in your case, use /bin/vi ~/.bashrc.
Currently, to get to the directory I need to type this:
cd /cygdrive/c/Users/NameOfUser/FolderBelongingToUser
Is there a way to make it so that I can just type something like:
cd FolderBelongingToUser ?
I'm familiar with z (uses ranking) and cdargs (uses shortcuts) but there are many other tools designed to make navigation in your shell easier and built-in solutions like CDPATH or the ** wildcard…
CDPATH
Adding something like this in your *rc file:
export CDPATH='.:~:/cygdrive/c/Users/NameOfUser/'
allows you to do exactly what you are after:
$ cd FolderBelongingToUser
or, better:
$ cd Fold<Tab>
**
If your bash is recent enough, you can do something like this:
$ cd **/foo
If you're using OSX you can open the hidden file named .bash_profile in your root user directory and add an entry like this:
alias define_your_shortcut='define your path'
You can do this for anything. For example here is an alias for your example:
alias FolderBelongingToUser='cd /cygdrive/c/Users/NameOfUser/FolderBelongingToUser'
Here's another example using a command to toggle hidden files
alias showfiles='defaults write com.apple.finder ShowAllFiles TRUE'
alias hidefiles='defaults write com.apple.finder ShowAllFiles FALSE'
After you make any changes to your bash_profile you'll need to either logout and login or you can open terminal and tell it to reload your bash_profile with this command
source ~/.bash_profile
I'm not personally familiar with Windows but if your using Windows a quick search result explained that this is how you would create a command prompt alias in Windows
AddConsoleAlias( TEXT("test"),
TEXT("cd \\<a_very_long_path>\\test"),
TEXT("cmd.exe"));
Alternatively it looks like someone provided a good answer to doing this in Windows here: https://superuser.com/questions/560519/how-to-set-an-alias-in-windows-command-line
Vim normally supports tab completion, so you can probably type something like
cd ~NamTabFolTab
which will expand to
cd /cygdrive/c/Users/NameOfUser/FolderBelongingToUser
Of course, if NameOfUser is you, then you can probably just type
cd ~/FolTab
You can add the following line to your .vimrc
cabbr FolderBelongingToUser /cygdrive/c/Users/NameOfUser/FolderBelongingToUser
Then you can can
cd FolderBelongingToUser
If you want to add more to the path (eg to specify a filename with :w) you can press / after FolderBelongingToUser and it will replace it with the full path and allow you to continue typing.
:ca[bbrev] is a Command line only abbreviation. See: :help :cabbr
If this is a permanent alias, then in your ~/.bashrc, create an alias:
alias FTBU='/cygdrive/c/Users/NameOfUser/FolderBelongingToUser'
You will then be able to access it in your shell by:
$ cd FTBU
As another trick, if you are only going to use the alias to change to the directory then simply add cd to the alias
alias FTBU='cd /cygdrive/c/Users/NameOfUser/FolderBelongingToUser'
You then need only type:
$ FTBU
to change to the /cygdrive/c/Users/NameOfUser/FolderBelongingToUser directory. However, if you plan to use the alias for any other purpose, leave the cd out of the alias definition.
If this is a temporary alias, you can simply create an alias from the command line with:
$ alias FTBU='/cygdrive/c/Users/NameOfUser/FolderBelongingToUser'
with the same results. (substitute anything you like for FTBU) Note: you remove an alias with the unalias command. Also Note: you should to check whether an existing system command exists with the name of your alias before assigning it. Simply type the proposed alias at the command line. If you receive something line bash: your_alias: Command Not Found, then you are good to go. There is no minimum number of characters required in an alias. So it you want to use a single-character, that's fine.
I installed Intellij Idea in my ubuntu.And I run it from the terminal.
First I do it like this,change the PATH into .bashrc,and also source it.
but it doesn't work.
And I'm sure the directory is correct.
Now I write a alias in .bashrc it works.
alias runidea='cd $THEDIR ; sh idea.sh'
I echo the PATH it's correct.but if I type sh idea.sh
it tells me sh:Can't open idea.sh
try just run it by typing idea.sh into your shell (without sh)
like $ idea.sh not $ sh idea.sh
Try this
alias runidea='~/idea-IU-111.277/bin/idea.sh'
Now the alias is created and then run the following command
runidea
idea-IU-111.277 can be replaced by your intellij idea folder