IDL resolve_routine

http://www.idlcoyote.com/tips/compile.html

nohup:

 nohup idl < bhistory.pro > out.txt &

Linux stuff

Change bash prompt

https://wiki.centos.org/TipsAndTricks/CustomizeBash
http://tldp.org/HOWTO/Bash-Prompt-HOWTO/x329.html
https://superuser.com/questions/60555/show-only-current-directory-name-not-full-path-on-bash-prompt



bash newline:

printf "hi \n there \n"

echo $'hi \nthere'
Words of the form $'string' are treated specially. The word expands to string, with backslash-escaped characters replaced as specified by the ANSI C standard.


Check if directory exists (or not)
https://stackoverflow.com/questions/59838/check-if-a-directory-exists-in-a-shell-script

if [ ! -d "$DIRECTORY" ]; then
  # Control will enter here if $DIRECTORY doesn't exist.
fi

If symbolic links are present:

if [ -d "$LINK_OR_DIR" ]; then 
  if [ -L "$LINK_OR_DIR" ]; then
    # It is a symlink!
    # Symbolic link specific commands go here.
    rm "$LINK_OR_DIR"
  else
    # It's a directory!
    # Directory command goes here.
    rmdir "$LINK_OR_DIR"
  fi
fi

Passless ssh

First log in on A as user a and generate a pair of authentication keys. Do not enter a passphrase:

a@A:~> ssh-keygen -t rsa

Finally append a's new public key to b@B:.ssh/authorized_keys and enter b's password one last 

time:

a@A:~> cat .ssh/id_rsa.pub | ssh b@B 'cat >> .ssh/authorized_keys'
b@B's password: 

From now on you can log into B as b from A as a without password.

http://www.linuxproblem.org/art_9.html

VIM commands and tidbits

Stop auto-indenting dammit!
http://vim.wikia.com/wiki/How_to_stop_auto_indenting


Search it
http://vim.wikia.com/wiki/Search_and_replace


change font size

:set guifont=Menlo:h12

Install amsmath support for vim
https://tex.stackexchange.com/questions/416030/how-do-i-make-vim-highlight-math-properly-in-the-align-environment


search and replace:

s/foo/bar/g

Find each occurrence of 'foo' (in the current line only), and replace it with 'bar'.

:%s/foo/bar/gc

Change each 'foo' to 'bar', but ask for confirmation first.

https://vim.fandom.com/wiki/Search_and_replace

Python links

http://sthurlow.com/python/lesson08/

http://mathesaurus.sourceforge.net/idl-numpy.html

https://docs.python.org/2/tutorial/

Galaxy classification

http://simbad.u-strasbg.fr/simbad/sim-id?Ident=IC+5063

IDL column width in output

Extend IDL's default column limit in output:

   OpenW, lun, 'myfile.txt', /Get_LUN, WIDTH=250
   PrintF, lun, mydata, FORMAT='(25(F9.2,x))'
   Free_LUN, lun

http://www.idlcoyote.com/fileio_tips/width.html