Hoffman2:Profile: Difference between revisions
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Use the command below to change password. It will prompt you for your old password, and then the new password. | Use the command below to change password. It will prompt you for your old password, and then the new password. | ||
$ passwd | $ passwd | ||
Changing password for user joebruin. | Changing password for user joebruin. | ||
Please enter your current password: | Please enter your current password: | ||
Please enter your new password: | Please enter your new password: | ||
==External Links== | ==External Links== |
Revision as of 01:24, 23 April 2014
In UNIX systems, there are certain configuration files that get executed every time you login. If you are using the Bash shell (default), you have a file called .bash_profile
which is processed when you log in. In order to make the FMRI toolset available to you on Hoffman2 and so you can work well with others, we recommend that you follow the instructions in the Basics section. Read Extras for some bells and whistles.
Basics
You account has one last thing that needs to be edited before being usable.
- SSH into Hoffman2
- Use your favorite text editor to edit the file
~/.bash_profile
- Insert these lines at the bottom of the file
source /u/home/FMRI/apps/etc/profile umask 007
- VIM
- Type
G
- capital G - to go to the end of the file - Type
A
- capital A - to go to the end of the line and enter insert mode - Type
ENTER
- to insert a newline - Type or paste in the specified lines.
- Type
- Emacs
- Use the arrow keys to scroll the cursor down to the bottom of the document and add a newline.
- Type or paste in the specified lines.
- NEdit
- Use the arrow keys to scroll the cursor down to the bottom of the document and add a newline.
- Type or paste in the specified lines.
- Save the file
- VIM
ESC + ":wq" + ENTER
- Emacs command line
CTRL+x, CTRL+c
- Emacs GUI
CTRL+x, CTRL+c, y
- or use the menu system
- NEdit
- Use the menu.
- VIM
- Log out of Hoffman2 and the next time you log in, everything will be set for you to start working.
Curious?
For those that care, what you are doing is asking the computer to execute the file
/u/home/FMRI/apps/etc/profile
every time you login. This file modifies your PATH variable so you have access to the FMRI toolset.
The last line
umask 007
makes it so that any files you create will not allow "anyone" outside your group to read, write, or execute files and directories you make. This does not automatically grant read, write, and execute privileges to you and your group though.
Extras
Collaboration
By default, any files and directories you create will not necessarily have permissions that allow your group to write on them. This can be a problem if other people are supposed to build on data you processed. We have a script (fix_perms.sh) that will kindly find any files you own in a specified directory that don't have read/write/execute permissions for the group and make it so they do.
You can build this script into your bash profile so that every time you log into Hoffman2, it will run in the background. It is also recommended that you run this script at the end of jobs to make results immediately available to collaborators.
Adding the line
fix_perms.sh -q /u/home/[GROUP]/data &
to the end of your bash profile will run the permission fixer on your group's common data directory in the background quietly each time you log in. Make sure to replace [GROUP] with the name of your Hoffman2 group (e.g. mscohen, sbook, cbearden, laltshul, jfeusner or mgreen).
Colors
You can change the content and color of your command prompt by editing your bash_profile. There is a great explanation of how to do this here.
Some of the content you can include in the command prompt:
- Current time
- You can format this however you want. This helps when looking back through your Terminal to find when you made certain changes to files.
- Current working directory
- So you always know where you are in a filesystem and don't need to constantly retype
pwd
. - Username
- Who you are. Helpful if you are logged into multiple servers under multiple accounts and need help keeping track.
- Host
- The name of the computer you are logged into. This also helps you know where you are at all times.
Line to add to your bash profile
export PS1="\[\e[0;31m\]\h\[\e[1;37m\]:\[\e[1;34m\]\w\n\[\e[1;37m\]\D{%Y-%m-%d-%H-%M-%S} \[\e[22;32m\]\u \$ "
Resulting prompt (on a black background)
HOST:CURRENT WORKING DIRECTORY
DATETIME IN ISO8601 FORMAT USERNAME $
Example Bash Profile
#.bash_profile # Get the aliases and functions if [ -f ~/.bashrc ]; then . ~/.bashrc fi # Source to use FMRI Apps source /u/home/FMRI/apps/etc/profile # Umask (Revoke Permissions) umask 007 # Collaborative permissions (Replace collabDirectory with your project Directory) fix_perms.sh -q /u/home/sbook/data/collabDirectory & # Happy Colors export PS1="\[\e[0;31m\]\h\[\e[1;37m\]:\[\e[1;34m\]\w\n\[\e[1;37m\]\D{%Y-%m-%d-%H-%M-%S} \[\e[22;32m\]\u \$ " # Fix for QRSH when consolidating job output files alias qrsh='qrsh -o /dev/null'
Changing Passwords
Use the command below to change password. It will prompt you for your old password, and then the new password.
$ passwd Changing password for user joebruin. Please enter your current password: Please enter your new password: