Colored tail -f

ctail

#!/bin/bash

macos="\x1B"
linux="\033"
marker=$linux

if echo $(uname -a) | grep -q -i "darwin";   then
  marker=$macos
fi

green="$marker[0;32m"
unset="$marker[0m"
symbols=";:,.<>?/\$~!@#$%^&*()+_-"

cat - | gsed -re "
s/(INFO)(.+)/$green\1$unset\2/gI; 
s/(WARN)(.+)/$marker[0;35m\1$unset\2/gI; 
s/(ERROR)(.+)/$marker[1;31m\1$unset\2/gI;
s/([a-z0-9$symbols]+)=([a-z0-9$symbols]+)/$green\1$unset=\2/gI; 
"

testing-ctail

#!/bin/bash

# http://stackoverflow.com/questions/5947742/how-to-change-the-output-color-of-echo-in-linux
# http://misc.flogisoft.com/bash/tip_colors_and_formatting
# Black        0;30     Dark Gray     1;30
# Red          0;31     Light Red     1;31
# Green        0;32     Light Green   1;32
# Brown/Orange 0;33     Yellow        1;33
# Blue         0;34     Light Blue    1;34
# Purple       0;35     Light Purple  1;35
# Cyan         0;36     Light Cyan    1;36
# Light Gray   0;37     White         1;37

macos="\x1B"
linux="\033"
marker=$linux

if echo $(uname -a) | grep -q -i "darwin";   then
  marker=$macos
fi

# echo $marker; exit;
green="$marker[0;32m"
unset="$marker[0m"
symbols=";:,.<>?/\$~!@#$%^&*()+_-"

mystr="Error [05-18|11:20:09] Starting P2P Error\n
eRROR [05-18|11:20:09] Starting P2P eRROR\n
ERROR [05-18|11:20:09] Starting P2P ERROR\n
INFO [05-18|11:20:09] Starting P2P INFO\n
WarN [05-18|11:20:09] Starting P2P WarN\n
WARN [05-18|11:20:09] Starting P2P WARN\n
INFO [05-18|11:20:09] Loaded most recent local full block      number=0 hash=d4e567…cb8fa3 td=17179869184\n
INFO [05-18|11:20:09] Loaded most recent local fast block      number=0 hash=d4e567…cb8fa3 td=17179869184\n
INFO [05-18|11:20:09] Starting P2P networking\n
INFO [05-18|11:20:11] RLPx listener up                         self=enode://0aad1c4e232d0ca6933eed9ab14e4cd83a038c7be4e68a539a1eae761dfdbd5359c084fc426badbd34f6987ac882195da74d09f17a5c33e896e9aae180e2a2a5@[::]:30303\n
INFO [05-18|11:20:11] IPC endpoint opened: /Users/thiagoh/Library/Ethereum/geth.ipc\n
INFO [05-18|11:21:17] New wallet appeared                      url=keystore:///Users/thiagoh/dev/b… status=Locked\n
INFO [05-18|11:25:45] Got interrupt, shutting down...\n
INFO [05-18|11:25:45] IPC endpoint closed: /Users/thiagoh/Library/Ethereum/geth.ipc\n
INFO [05-18|11:25:45] Blockchain manager stopped\n
INFO [05-18|11:25:45] Stopping Ethereum protocol\n
INFO [05-18|11:25:45] Ethereum protocol stopped\n
INFO [05-18|11:25:45] Transaction pool stopped\n
INFO [05-18|11:25:45] Database closed                          database=/Users/thiagoh/dev/blockchain/solidity-experiments/.ethereum_private/geth/chaindata\n
"


# echo -e $mystr | gsed -re "
# s/(INFO)(.+)/$green\1$unset\2/gI; 
# s/(WARN)(.+)/$marker[0;35m\1$unset\2/gI; 
# s/(ERROR)(.+)/$marker[1;31m\1$unset\2/gI;
# s/([a-z0-9$symbols]+)=([a-z0-9$symbols]+)/$green\1$unset=\2/gI; 
# "

cat - | gsed -re "
s/(INFO)(.+)/$green\1$unset\2/gI; 
s/(WARN)(.+)/$marker[0;35m\1$unset\2/gI; 
s/(ERROR)(.+)/$marker[1;31m\1$unset\2/gI;
s/([a-z0-9$symbols]+)=([a-z0-9$symbols]+)/$green\1$unset=\2/gI; 
"