This function lets you easily create series of commands into a single call # It will print each successive command, run it and, as long as it returned # with code 0, continue to the next step. # If any step fails, it will stop and let you pick it back up after you fix the # issues.

_command_runner.sh

#!/usr/bin/env bash

# This function lets you easily create series of commands into a single call
# It will print each successive command, run it and, as long as it returned
# with code 0, continue to the next step.
# If any step fails, it will stop and let you pick it back up after you fix the
# issues.
#
# Example of script using this function:
# !/usr/bin/env bash
#
# source command_runner
#
# foo () {
#     cat <<-EOL
#     ls
#     cd ~
#     # You can have comments too
#     ls
#     # this will fail and not continue forward
#     cd notafolder
#     ls
# EOL
# }
#
# run_commands foo
#
# There are some limitations to the commands you can run and you might
# sometimes need to put them inside function instead.

source colors.sh

run_commands () {
    skip=0
    keepRunning=1
    list=0

    # You can pass a second argument to skip the given number of steps
    # e.g. passing 2 will skip all the commands until the one labeled 2
    # comments are not counted in the number of commands
    # Skipped commands are still printed for information
    if [ -n "$2" ] && [ $2 != "list" ]; then
        skip=$2
    fi

    # Check that command exists
    if [[ -z "$(type -t $1)" ]]; then
        echo "Command not found"
        echo
        help
        exit 1
    fi

    i=0

    # Lets you print out the plan
    if [[ $2 == 'list' ]]; then
        list=1
    fi

    while read -r line; do
        # Skip comments
        if [[ ! $line == \#* ]]; then
            if [ $skip -gt $i ]; then
                echo -e "~ $i.$line"
            elif [ $keepRunning == 1 ] && [ $list != 1 ]; then
                echo -n -e "  $i.${txtwht}${line}${txtrst}"
                OUT=$($line 2>&1)
                code=$?

                if [ $code = 0 ]; then
                    erasePreviousLine
                    echo -e "${chkmrk} $i.${bldgrn}${line}${txtrst}"
                else
                    erasePreviousLine
                    echo -e "${xmark} $i.${bldred}${line}${txtrst}"
                    failedCode=$code
                    failedCommand=$line
                    keepRunning=0
                fi
            else
                echo -e "  $i.$line"
            fi
            i=$((i+1))
        fi
    done < <(echo "$($1)")

    if [ $keepRunning == 0 ] && [ -n $code ]; then
        echo
        echo -e "Command ${txtwht}${failedCommand}${txtrst} failed with exit code ${txtwht}${code}${txtrst}"
        echo "Output:"
        echo "$OUT"
        echo
        exit $code
    fi
}

colors.sh

# Defines variables and functions for colors to be used in other scripts

erasePreviousLine () {
    eraseline='\r\033[K'
    echo -ne "$eraseline"
}

# Special characters
xmark="\xE2\x9C\x97"
chkmrk="\xE2\x9C\x93"

# Colors
endcolor='\033[0m'
white='\033[1;37m'
gray='\033[0;37m'
red='\033[1;31m'
green='\033[1;32m'

txtblk='\033[0;30m' # Black - Regular
txtred='\033[0;31m' # Red
txtgrn='\033[0;32m' # Green
txtylw='\033[0;33m' # Yellow
txtblu='\033[0;34m' # Blue
txtpur='\033[0;35m' # Purple
txtcyn='\033[0;36m' # Cyan
txtwht='\033[0;37m' # White
bldblk='\033[1;30m' # Black - Bold
bldred='\033[1;31m' # Red
bldgrn='\033[1;32m' # Green
bldylw='\033[1;33m' # Yellow
bldblu='\033[1;34m' # Blue
bldpur='\033[1;35m' # Purple
bldcyn='\033[1;36m' # Cyan
bldwht='\033[1;37m' # White
unkblk='\033[4;30m' # Black - Underline
undred='\033[4;31m' # Red
undgrn='\033[4;32m' # Green
undylw='\033[4;33m' # Yellow
undblu='\033[4;34m' # Blue
undpur='\033[4;35m' # Purple
undcyn='\033[4;36m' # Cyan
undwht='\033[4;37m' # White
bakblk='\033[40m'   # Black - Background
bakred='\033[41m'   # Red
bakgrn='\033[42m'   # Green
bakylw='\033[43m'   # Yellow
bakblu='\033[44m'   # Blue
bakpur='\033[45m'   # Purple
bakcyn='\033[46m'   # Cyan
bakwht='\033[47m'   # White
txtrst='\033[0m'    # Text Reset