The keyboard bindings in iTerm on OSX Snow Leopard are fubar. To fix them either switch to Linux or put this in your zsh or bash configuration:

   1  bindkey "^r" history-incremental-search-backward
   2  bindkey '^E' end-of-line
   3  bindkey '^A' beginning-of-line
   4  bindkey 'ƒ'  forward-word
   5  bindkey '›'  backward-word
   6  bindkey "^F" forward-char
   7  bindkey "^B" backward-char
   8  bindkey "^k" kill-line
   9  bindkey "^u" backward-kill-line

Put this in ~/.bashrc:

   1  app () { cd "/var/www/$*/current"; }

Execute:

   1  . ~/.bashrc

Now you can change to another Rails app directory like this:

   1  app xxx.com

Expect can come in handy when you can’t configure ssh public key authentication on the servers :) (and the system “architect” hasn’t yet realized the wonderfulness of a log host).

   1  #!/bin/bash
   2  #
   3  # Usage: script <username> <password> <build>
   4  #
   5  # Example ./copy_logs_from_production.sh marko hubbabubba current
   6  #
   7  
   8  username=$1
   9  password=$2
  10  build=$3
  11  mkdir $build
  12  
  13  instance_1_server=10.0.0.1
  14  instance_2_server=10.0.0.1
  15  instance_3_server=10.0.0.2
  16  instance_4_server=10.0.0.2
  17  instance_5_server=10.0.0.3
  18  instance_6_server=10.0.0.3
  19  instance_7_server=10.0.0.4
  20  instance_8_server=10.0.0.4
  21  instance_9_server=10.0.0.5
  22  
  23  servers=("$instance_1_server" "$instance_2_server" "$instance_3_server" "$instance_4_server" "$instance_5_server" "$instance_6_server" "$instance_7_server" "$instance_8_server" "$instance_9_server" )
  24  i=1
  25  for server in ${servers[@]}; do
  26    expect -c "
  27              # exp_internal 1 # uncomment for debugging
  28              spawn /usr/bin/scp $username@$server:/var/logs/application/$build/server${i}/error.log $build/error-${i}.log
  29              expect { 
  30                "*password:*" { send $password\r\n; interact } 
  31                eof { exit }
  32              }
  33              exit
  34              "
  35    let "i=i+1"
  36  done
  37  

To append to a stream in bash without the trailing line feed use printf to format the output before appending it to the stream.

   1  i=42
   2  FILE=/tmp/atm
   3  printf "%s" "${i}" > $FILE

Use find instead of rm:

   1  find . -name '*' | xargs rm

The command deletes all files in the current directory.