I am not able to create .bashrc file in the home directory. When I try to use touch I get:
touch: .bashrc: No such file or directory
When I type vim .bashrc in the home directory, and try to save using :w, it says
E166: Can't open linked file for writing
Edit:
Output of ls -l .bash*
lrwxr-xr-x 1 ankitsultana staff 34 Oct 30 2014 .bash -> /Users/ankitsultana/.dotfiles/bash
-rw------- 1 ankitsultana staff 7069 Nov 26 01:04 .bash_history
-rw-r--r-- 1 ankitsultana staff 2633 Nov 26 13:51 .bash_profile
-rw-r--r-- 1 ankitsultana staff 167 Sep 21 2014 .bash_profile-anaconda.bak
-rw-r--r-- 1 ankitsultana staff 1791 Jun 30 2015 .bash_profile.pysave
lrwxr-xr-x 1 ankitsultana staff 36 Oct 30 2014 .bashrc -> /Users/ankitsultana/.dotfiles/bashrc
Related
I was toying with the idea of creating an alias that would allow me to list the contents of a target subdirectory, without changing to that directory.
I have successfully been able to create both an alias and a script to change directory and display contents. I call the script leap and it is simply:
#!/bin/bash
PATH=/bin:/usr/bin:.
# script to change to a directory, then display current contents
cd $1 && ls -l -a
The alias I use to trigger leap is defined: alias lp='. ~/scripts/leap'
My hope was I could simply create an alias named pk (pk is for peek) and concatenate my leap script and a standard bash command using &&. I could not be more wrong.
Current Directory
For reference, here is the contents of my current home directory (my user id has been replaced with $$$$):
drwxr-xr-x 3 $$$$$$ 46374 23 Aug 30 11:40 Fall_2019
drwxr-xr-x 5 $$$$$$ 46374 66 Aug 28 09:01 PAST_COURSES
drwxr-xr-x 3 $$$$$$ 46374 22 Aug 30 12:03 repos
drwxr-xr-x 3 $$$$$$ students 117 Aug 31 09:06 scripts
The Attempt(s)
Using alias pk='lp $1 && cd ..'
Entering [$$$$#host ~]$ pk PAST_COURSES results in:
-rw------- 1 $$$$$$ students 1766 Feb 28 2018 ~
drwx------ 10 $$$$$$ students 4096 Aug 31 09:06 .
drwx--x--x 1232 root root 28672 Aug 30 16:03 ..
-rw------- 1 $$$$$$ students 11368 Aug 30 12:20 .bash_history
-rw------- 1 $$$$$$ students 18 Aug 21 2017 .bash_logout
-rw------- 1 $$$$$$ students 180 Mar 8 2018 .bash_profile
-rw------- 1 $$$$$$ students 526 Aug 30 11:19 .bashrc
-rw------- 1 $$$$$$ students 266 Aug 21 2017 .cshrc
drwxr-xr-x 3 $$$$$$ 46374 23 Aug 30 11:40 Fall_2019
drwxr-xr-x 8 $$$$$$ students 155 Aug 30 12:14 .git
-rw-r--r-- 1 $$$$$$ students 87 Apr 11 2018 .gitconfig
-rw-r--r-- 1 $$$$$$ students 12288 Jan 29 2018 .hello.swp
-rw------- 1 $$$$$$ students 172 Aug 21 2017 .kshrc
-rw------- 1 $$$$$$ students 189 Mar 13 2018 .lesshst
-rw-r--r-- 1 $$$$$$ students 20480 Jan 29 2018 .ls.swn
drwxr-xr-x 5 $$$$$$ 46374 66 Aug 28 09:01 PAST_COURSES
drwxr----- 3 $$$$$$ 46374 18 Aug 30 12:16 .pki
drwxr-xr-x 3 $$$$$$ 46374 22 Aug 30 12:03 repos
drwxr-xr-x 3 $$$$$$ students 117 Aug 31 09:06 scripts
drwx------ 3 $$$$$$ students 103 Aug 30 11:12 .ssh
-rw------- 1 $$$$$$ students 12288 Sep 6 2017 .swp
drwxr-xr-x 2 $$$$$$ 46374 23 Aug 31 09:06 .vim
-rw-r--r-- 1 $$$$$$ students 8129 Aug 31 09:06 .viminfo
-rw-r--r-- 1 $$$$$$ students 142 Feb 14 2018 .vimrc
[$$$$#host home]$
As you can see, this displays the current directory ( ~ ) rather than switching to PAST_COURSES and displaying it. Additionally, the alias jumps up one directory above the current directory ( ~ ) rather than returning to it from PAST_COURSES.
Incidentally, I also get this exact result when I try using the following aliases:
pk='. ~/scripts/leap $1 && cd ..'
(using the script for leap rather than the alias)
pk='cd $1 && ls -l -a && cd ..'
(using the exact code inside leap )
Findings
In my tinkering I have noticed a few things:
First, if I simply type $$$$#host ~]$ ~/scripts/leap *[dir-name]* I actually get EXACTLY what I want - a look into a directory without changing to it. All by omitting the leading ., which boggles me.
Second, I can fix the current pk alias by changing the trailing cd .. to cd $(pwd), though it will not display the target directory instead of the current one.
At this point, I'd like a little help - not just in a script or alias that will do the job. An explanation that explains this behavior that I'm seeing would be marvelous.
Don't use . (the source builtin)
alias pk='. ~/scripts/leap $1 && cd ..' (using the script for leap rather than the alias)
is not equivalent to
alias pk='cd $1 && ls -l -a && cd ..'
In the first one, the . builtin (also known as source) is used, while in the second it is not. . doesn't just execute a command, it executes it in the current shell context. From the documentation:
. (a period)
. filename [arguments]
Read and execute commands from the filename argument in the current shell context.
That means anything the script does effects your current shell context. If the script changes directories, so does your current context.
If, on the other hand, the first version omitted the . like this:
alias pk='~/scripts/leap $1 && cd ..'
then the contents of the leap script would run in it's own bash context, but your current context would move up one directory (since the cd .. isn't inside the leap script).
Additional Recommendation on Functions vs Aliases
You could implement pk using a function like this:
pk() {
pushd $1
if [[ $? == 0 ]]; then
# Successfully changed directories.
# Run command
$2
# Return from the pre-pushd directory.
popd
fi
}
From the Bash Manual | 6.6 Aliases:
For almost every purpose, shell functions are preferred over aliases.
Example Alias
alias foo="echo bar"
Equivalent Function
foo() {
echo bar
}
I install lua success in my mac, but i got "-bash: lua: command not found" message when i run lua cmd, but i run /usr/loca/bin/lua success, i confirm the path that lua installed is included in PATH. I record some information as follow:
lxr:bin wang$ pwd
/usr/local/bin
lxr:bin wang$ echo $PATH
.;/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:JAVA_HOME/bin
lxr:bin wang$ lua
-bash: lua: command not found
lxr:bin wang$ pwd
/usr/local/bin
lxr:bin wang$ ls -l
total 872
-rwxr-xr-x 1 root wheel 80 11 23 00:40 VBoxAutostart
-rwxr-xr-x 1 root wheel 82 11 23 00:40 VBoxBalloonCtrl
-rwxr-xr-x 1 root wheel 80 11 23 00:40 VBoxBugReport
-rwxr-xr-x 1 root wheel 77 11 23 00:40 VBoxDTrace
-rwxr-xr-x 1 root wheel 79 11 23 00:40 VBoxHeadless
-rwxr-xr-x 1 root wheel 77 11 23 00:40 VBoxManage
-rwxr-xr-x 1 root wheel 79 11 23 00:40 VBoxVRDP
-rwxr-xr-x 1 root wheel 77 11 23 00:40 VirtualBox
lrwxr-xr-x 1 root wheel 14 3 28 2016 git -> ../git/bin/git
lrwxr-xr-x 1 root wheel 37 3 28 2016 git-credential-osxkeychain -> ../git/bin/git-credential-osxkeychain
lrwxr-xr-x 1 root wheel 24 3 28 2016 git-cvsserver -> ../git/bin/git-cvsserver
lrwxr-xr-x 1 root wheel 20 3 28 2016 git-shell -> ../git/bin/git-shell
lrwxr-xr-x 1 root wheel 26 3 28 2016 git-upload-pack -> ../git/bin/git-upload-pack
lrwxr-xr-x 1 root wheel 15 3 28 2016 gitk -> ../git/bin/gitk
-rwxr-xr-x 1 root wheel 221128 12 1 15:53 lua
-rwxr-xr-x 1 root wheel 150520 12 1 15:53 luac
-rwxr-xr-x 1 root wheel 2670 11 28 2014 pstorm
-rwxr-xr-x 1 root wheel 1394 3 8 2017 ssh-copy-id
-rwxr-xr-x 1 root wheel 75 11 23 00:40 vbox-img
-rwxr-xr-x 1 root wheel 77 11 23 00:40 vboxwebsrv
lxr:bin wang$ ./lua
Lua 5.3.0 Copyright (C) 1994-2015 Lua.org, PUC-Rio
>
lxr:bin wang$
The first two characters in $PATH should probably be .:, not .;.
I found these libraries: http://www.g95.org/downloads.shtml. I downloaded the x86 OSX binaries, unzipped the file, and did ln -s bin/i686-apple-darwin10.3.0-g95 /usr/local/bin/g95, and added chmod +rx permissions to all these files, but I still can't run the g95 executable.
g95-install$ ls -la *
-rwxr-xr-x# 1 kilojoules staff 138126 Jan 17 2013 G95Manual.pdf
-rwxr-xr-x# 1 kilojoules staff 523 Jul 15 22:43 INSTALL
bin:
total 352
drwxr-xr-x# 3 kilojoules staff 102 Jan 17 2013 .
drwxr-xr-x# 6 kilojoules staff 204 Jul 15 22:43 ..
-rwxr-xr-x# 1 kilojoules staff 176968 Jan 17 2013 i686-apple-darwin10.3.0-g95
lib:
total 0
drwxr-xr-x# 3 kilojoules staff 102 Jul 15 22:39 .
drwxr-xr-x# 6 kilojoules staff 204 Jul 15 22:43 ..
drwxr-xr-x# 3 kilojoules staff 102 Jul 15 22:39 gcc-lib
$ ln -s bin/i686-apple-darwin10.3.0-g95 /usr/local/bin/g95
$PATH
-bash: /usr/local/bin:/usr/local/sbin:/Users/kilojoules/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin: No such file or directory
$ g95
-bash: g95: command not found
Why isn't there a brew formula for this?
I'm following "How to Write Go Code" and tries to delete stringutil.a under $GOPATH/pkg/darwin_amd64/github.com/user. The delete is successful but the file comes back on its own. I'm confused. What is happening?
zps-MacBook-Air:haibin haibin$ rm stringutil.a
zps-MacBook-Air:haibin haibin$ ls -lah
total 0
drwxr-xr-x 2 haibin staff 68B Feb 15 00:57 .
drwxr-xr-x 17 haibin staff 578B Feb 15 00:39 ..
zps-MacBook-Air:haibin haibin$ ls -lah
total 8
drwxr-xr-x 3 haibin staff 102B Feb 15 00:57 .
drwxr-xr-x 17 haibin staff 578B Feb 15 00:39 ..
-rw-r--r-- 1 haibin wheel 2.4K Feb 15 00:57 stringutil.a
You need to delete the stringutil.go source file that is under the src tree. The *.a file is a binary file which results from the compilation (and possibly linking) of source files.
I have local ruby gem, with a development version forked from github. So I have it locally. Now I want to use it in my application. I'm using bundler so I did:
gem 'otrs_connector', :path => '/devel/otrs_connector'
problem is that I get errors about missing files
require 'rubygems'
require 'otrs_connector'
then run
$ ruby app.rb
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no such file to load -- otrs_connector (LoadError)
how can I load my "under development" gem?
this is my /devel/otrs_connector
$ ls -al /devel/otrs_connector
total 112
drwxr-xr-x 15 marcinkrzyzanowski staff 510 Oct 1 15:22 .
drwxr-xr-x 33 marcinkrzyzanowski staff 1122 Oct 1 15:17 ..
-rw-r--r-- 1 marcinkrzyzanowski staff 55 Oct 1 15:04 .document
drwxr-xr-x 13 marcinkrzyzanowski staff 442 Oct 1 15:04 .git
-rw-r--r-- 1 marcinkrzyzanowski staff 820 Oct 1 15:04 .gitignore
-rw-r--r-- 1 marcinkrzyzanowski staff 480 Oct 1 15:04 Gemfile
-rw-r--r-- 1 marcinkrzyzanowski staff 773 Oct 1 15:04 Gemfile.lock
-rw-r--r-- 1 marcinkrzyzanowski staff 1054 Oct 1 15:04 LICENSE.txt
-rw-r--r-- 1 marcinkrzyzanowski staff 2016 Oct 1 15:04 README.rdoc
-rw-r--r-- 1 marcinkrzyzanowski staff 1428 Oct 1 15:04 Rakefile
-rw-r--r-- 1 marcinkrzyzanowski staff 5 Oct 1 15:04 VERSION
drwxr-xr-x 4 marcinkrzyzanowski staff 136 Oct 1 15:04 lib
-rw-r--r-- 1 marcinkrzyzanowski staff 16896 Oct 1 15:22 otrs_connector-1.3.0.gem
-rw-r--r-- 1 marcinkrzyzanowski staff 2954 Oct 1 15:04 otrs_connector.gemspec
drwxr-xr-x 4 marcinkrzyzanowski staff 136 Oct 1 15:04 test
Where is the file stored? I think you stored it in a devel folder in your home folder, not at /devel. If you start a path with a /, you points to the root of the HD path.
You might want to change the path to
gem 'otrs_connector', :path => '~/devel/otrs_connector'
(please note the ~ which is a replacement for the path to your home folder).