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# MIT Licensed
#
#(c) 2017 Alexander Williams, Unscramble <license@unscramble.jp>
#
# IPv4 "24" -> "255.255.255.0"
[de cidr-to-netmask (Mask)
  (let (Pos (- 5 (/ Mask 8))
        Val (& (>> (- (- 8 (% Mask 8))) 255) 255) )

    (glue "."

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<?xml version="1.0" encoding="UTF-8"?>
<!--

 This file is part of GtkSourceView

 Author: Paolo Borelli <pborelli@gnome.org>
 Copyright (C) 2006-2007 Paolo Borelli

 GtkSourceView is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public

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(patch _htHead
  '(case (lowc (till " ^M^J" T)) @S)
  (fill '(case (lowc (till " ^M^J" T))
            ("auth-hash:"   (setq *AUTH_HASH    (pack (cdr (line)))))
            ("auth-cookie:" (setq *AUTH_COOKIE  (pack (cdr (line)))))
            ("auth-token:"  (setq *AUTH_TOKEN   (pack (cdr (line)))))
            . @S) ) )

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I recently ran into an issue of MongoDB shell commands not working. The error message was:

Invariant failure !driverName.empty() && !driverVersion.empty() && !osType.empty() && !osName.empty() && !osArchitecture.empty() && !osVersion.empty() src/mongo/rpc/metadata/client_metadata.cpp

I ran an strace on the mongo command and saw it was trying (and failing) to open the following files:

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This gist is meant to track backwards incompatible changes in PicoLisp, and provide simple hacks to ensure backwards compatibility with older versions.

PicoLisp v17.3.4 - March 2017

• (local) syntax changes
• (local) is now undefined in 32-bit
• (local) [doesn't accept parameters in 64-bit]

HACK:

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# Suppress WRITE SAME messages
 disks=`find /sys | grep max_write_same_blocks`

 for i in $disks; do
   [ -f "$i" ] && echo 0 > "$i"
 done

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Hopefully this can save someone else some time

If you get the error message: "No Package matching 'yum-downloadonly'"

Well it's because the package was renamed in RHEL6, but CentOS 6 only recently removed it, so now you must refer to yum-plugin-downloadonly instead.

Snippet from here: https://access.redhat.com/solutions/10154

(RHEL5)

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diff --git a/etc/init.d/tc-config b/etc/init.d/tc-config
index f6002dd..c44876c 100755
--- a/etc/init.d/tc-config
+++ b/etc/init.d/tc-config
@@ -25,6 +25,8 @@ addUser(){
 
 # Main
 
+[ -f "/opt/preboot.sh" ] && /opt/preboot.sh
+

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--- Makefile	2015-09-06 03:34:04.000000000 +0000
+++ Makefile.old	2015-09-06 03:34:33.000000000 +0000
@@ -19,10 +19,10 @@ CFLAGS = -c -O2 -pipe \
 
 ifeq ($(shell uname), Linux)
 	OS = Linux
-	CFLAGS += -m32
-	PICOLISP-FLAGS = -m32 -rdynamic
+	#CFLAGS += -m32
+	PICOLISP-FLAGS = -rdynamic

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# Had this crazy networking problem when trying to use an EC2 instance as a NAT gateway.
#
# Here's a fix I found buried in documentation here:
# http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_NAT_Instance.html
#

Disabling Source/Destination Checks

Each EC2 instance performs source/destination checks by default. This means that the instance must be the source or destination of any traffic it sends or receives. However, a NAT instance must be able to send and receive traffic when the source or destination is not itself. Therefore, you must disable source/destination checks on the NAT instance.