Editing File: /usr/share/nano/sh.nanorc

## Here is an example for Bourne shell scripts.

# Function declarations.
color brightgreen "^[A-Za-z0-9_-]+"

# Keywords, symbols, and comparisons.
color green "\<(break|case|continue|do|done|elif|else|esac|exit|fi|for|function|if|in|read|return|select|shift|then|time|until|while)\>"
color green "\<(declare|eval|exec|export|let|local)\>"
color green "[{}():;|`$<>!=&\\]" "(\]|\[)"
color green "-(eq|ne|gt|lt|ge|le|ef|ot|nt)\>"

# Short and long options.
color brightmagenta "[[:blank:]]-[A-Za-z]\>" "[[:blank:]]--[A-Za-z-]+\>"

# Common commands.
color brightblue "\<(awk|cat|cd|ch(grp|mod|own)|cp|cut|echo|env|grep|head|install|ln|make|mkdir|mv|popd|printf|pushd|rm|rmdir|sed|set|sort|tail|tar|touch|umask|unset)\>"
color normal "[.-]tar\>"

# Basic variable names (no braces).
color brightred "\$[-0-9@*#?$!]" "\$[[:alpha:]_][[:alnum:]_]*"
# More complicated variable names; handles braces and replacements and arrays.
color brightred "\$\{[#!]?([-@*#?$!]|[0-9]+|[[:alpha:]_][[:alnum:]_]*)(\[([[:space:]]*[[:alnum:]_]+[[:space:]]*|@)\])?(([#%/]|:?[-=?+])[^}]*\}|\[|\})"

# Comments.
color cyan "(^|[[:space:]])#.*$"

# Strings.
color brightyellow ""(\\.|[^"])*"" "'(\\.|[^'])*'"

# Trailing whitespace.
color ,green "[[:space:]]+$"

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