forked from colonelpanic/dotfiles
88 lines
2.0 KiB
Bash
88 lines
2.0 KiB
Bash
function command_exists {
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hash "$1" 2>/dev/null 1>/dev/null
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}
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function run_if_exists {
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command_exists "$@" && "$@"
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}
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function shell_contains () {
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local e
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for e in "${@:2}"; do
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[[ "$1" == *"$e"* ]] && return 0
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done
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return 1
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}
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function environment_variable_exists {
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eval "value=\"\${$1+x}\""
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[ ! -z $value ]
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}
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function setup_unless_environment_variable_exists {
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environment_variable_exists "$1" || { $2 && export "$1=$(date)"; }
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}
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function add_to_path {
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eval "$(python $HOME/.lib/python/shell_path.py --include-assignment "$@")"
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}
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# Taken from http://www.unix.com/shell-programming-and-scripting/27932-how-know-linux-distribution-i-am-using.html
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function get_distro {
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# start with uname and branch the decision from there
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dist=$(uname -s 2> /dev/null)
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if [ "$dist" = "Linux" ]; then
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get_linux_distro && return 0
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elif [ -n "$dist" ]; then
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echo "$dist"
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return 0
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fi
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proc_version || echo "Unknown"
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return 1
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}
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function get_linux_distro {
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if [ -r /etc/lsb-release ]; then
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dist=$(grep 'DISTRIB_ID' /etc/lsb-release | sed 's/DISTRIB_ID=//' | head -1)
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[ -n "$dist" ] && echo "$dist" && return 0
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fi
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if [ -r /etc/os-release ]; then
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dist=$(grep 'ID=' /etc/os-release | sed 's/ID=//' | head -1)
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[ -n "$dist" ] && echo "$dist" && return 0
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fi
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dist=$(find /etc/ -maxdepth 1 -name '*release' 2> /dev/null | sed 's/\/etc\///' | sed 's/-release//' | head -1)
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[ -n "$dist" ] && echo "$dist" && return 0
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dist=$(find /etc/ -maxdepth 1 -name '*version' 2> /dev/null | sed 's/\/etc\///' | sed 's/-version//' | head -1)
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[ -n "$dist" ] && echo "$dist" && return 0
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return 1
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}
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function is_osx() {
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if command_exists uname; then
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case `uname` in
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'Darwin')
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return 0;
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;;
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*)
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return 1;
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;;
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esac
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else
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return 1
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fi
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}
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function source_directory_files {
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for filename in "$1"/*; do
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environment_variable_exists SHELL_STARTUP_DEBUG && echo "Sourcing $filename"
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source "$filename"
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done
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}
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function min {
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[ $1 -le $2 ] && echo "$1" || echo "$2"
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}
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