Added function into a files not in zshrc
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21
.local/bin/cidr2mask
Executable file
21
.local/bin/cidr2mask
Executable file
@ -0,0 +1,21 @@
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#!/bin/bash
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cidr2mask() {
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local i mask=""
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local full_octets=$(($1 / 8))
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local partial_octet=$(($1 % 8))
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for ((i = 0; i < 4; i += 1)); do
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if [ $i -lt $full_octets ]; then
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mask+=255
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elif [ $i -eq $full_octets ]; then
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mask+=$((256 - 2 ** (8 - partial_octet)))
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else
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mask+=0
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fi
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test $i -lt 3 && mask+=.
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done
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echo $mask
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}
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cidr2mask "$@"
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20
.local/bin/mask2cidr
Executable file
20
.local/bin/mask2cidr
Executable file
@ -0,0 +1,20 @@
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#!/bin/bash
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mask2cidr() {
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local mask=$1
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# In RFC 4632 netmasks there's no "255." after a non-255 byte in the mask
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local left_stripped_mask=${mask##*255.}
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local len_mask=${#mask}
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local len_left_stripped_mask=${#left_stripped_mask}
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local conversion_table=0^^^128^192^224^240^248^252^254^
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local number_of_bits_stripped=$(((len_mask - len_left_stripped_mask) * 2))
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local signifacant_octet=${left_stripped_mask%%.*}
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local right_stripped_conversion_table=${conversion_table%%$signifacant_octet*}
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local len_right_stripped_conversion_table=${#right_stripped_conversion_table}
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local number_of_bits_from_conversion_table=$((len_right_stripped_conversion_table / 4))
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echo $((number_of_bits_stripped + number_of_bits_from_conversion_table))
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}
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mask2cidr "$@"
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37
.zshrc
37
.zshrc
@ -16,43 +16,6 @@ gbranch() {
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echo -e "$(git branch "$@")"
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}
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mask2cidr() {
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local mask=$1
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# In RFC 4632 netmasks there's no "255." after a non-255 byte in the mask
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local left_stripped_mask=${mask##*255.}
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local len_mask=${#mask}
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local len_left_stripped_mask=${#left_stripped_mask}
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local conversion_table=0^^^128^192^224^240^248^252^254^
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local number_of_bits_stripped=$((($len_mask - $len_left_stripped_mask) * 2))
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local signifacant_octet=${left_stripped_mask%%.*}
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local right_stripped_conversion_table=${conversion_table%%$signifacant_octet*}
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local len_right_stripped_conversion_table=${#right_stripped_conversion_table}
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local number_of_bits_from_conversion_table=$((len_right_stripped_conversion_table / 4))
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echo $(($number_of_bits_stripped + $number_of_bits_from_conversion_table))
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}
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cidr2mask() {
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local i mask=""
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local full_octets=$(($1 / 8))
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local partial_octet=$(($1 % 8))
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for ((i = 0; i < 4; i += 1)); do
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if [ $i -lt $full_octets ]; then
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mask+=255
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elif [ $i -eq $full_octets ]; then
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mask+=$((256 - 2 ** (8 - $partial_octet)))
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else
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mask+=0
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fi
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test $i -lt 3 && mask+=.
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done
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echo $mask
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}
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[ -f /etc/gentoo-release ] && export ZSH="/usr/share/zsh/site-contrib/oh-my-zsh"
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[ -f /etc/centos-release ] && export ZSH="$HOME/.oh-my-zsh"
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[ -f /etc/debian_version ] && export ZSH="$HOME/.oh-my-zsh"
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