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用您选择的颜色突出显示多个图案、短语：

tag-icon • tag-icon command-line bash grep less
用您选择的颜色突出显示多个图案、短语：

我想在终端中查看文本（可以是文件或管道命令输出），但我想用颜色突出显示文本中的特定模式，类似于如何grep在其输出行中突出显示模式匹配。

我不能在这里使用标准的原因grep "pattern" /path/to/file是因为我想要查看整个文本（理想情况下是可滚动的，就像通过管道传输一样less），而不仅仅是包含模式的行。

答案1

实际上，利用一些参数就可以轻松实现这一点grep。

您正在寻找的神奇命令是：

grep --color -E "test|$" yourfile

以下是一些示例输出： 在此处输入图片描述

全面披露：该命令来自这个答案。

答案2

如果你没有被困在颜色突出显示，你可以使用less它本身例如

less +g -p PATTERN file

或者

less +g +/PATTERN file

突出显示中+/PATTERN的所有实例，并抑制滚动到第一个匹配的默认行为。PATTERNfile+g

答案3

用您选择的颜色突出显示多个图案、短语：

您可以将以下脚本保存在名为的文件中~/.rc_highlight_pattern_v0.4_rc并使用其获取来源source ~/.rc_highlight_pattern_v0.4_rc（或者您可以编辑~/.bashrc文件以包含此来源）。

获取此脚本将使_Highlight_Pattern终端发挥作用。请参阅_Highlight_Pattern -h获取帮助。

## Script name: rc_highlight_pattern_v0.4_rc
## Script version: 0.4
## Script stats:
##   * No. of global variables ( 0* ) : { * there are three, but uset from scope at end }
##         3 (global destructed: __USR_shHIGHLIGHT_PATTERN_ENABLE ; __USR_shHIGHLIGHT_PATTERN_SHOW_INFO ; __USR_shHIGHLIGHT_PATTERN__SCRIPT_ARGS )
##       + 1 ( shell variables: REPLY )
##   * No. of external commands (which are not among Bash builtins): 1
##   * List of external commands: `sed'.

declare -g __USR_shHIGHLIGHT_PATTERN_ENABLE="YES"

declare __USR_shHIGHLIGHT_PATTERN__SCRIPT_ARGS=""
while [[ ${#} -gt 0 ]]; do
    __USR_shHIGHLIGHT_PATTERN__SCRIPT_ARGS="${1}"
    case "${__USR_shHIGHLIGHT_PATTERN__SCRIPT_ARGS}" in
        -i|--info)
            __USR_shHIGHLIGHT_PATTERN_SHOW_INFO="YES"
            shift
            ;;
        -n|--no-source)
            __USR_shHIGHLIGHT_PATTERN_ENABLE="NO"
            shift
            ;;
        *)
            break  ## stop parsing command-line
            ;;
    esac
done

unset __USR_shHIGHLIGHT_PATTERN__SCRIPT_ARGS

if [[ "${__USR_shHIGHLIGHT_PATTERN_SHOW_INFO}" == "YES" ]] ; then
    while read -r ; do
        echo "${REPLY}"
    done <<-__EOF
Description:
    This script will avail _Highlight_Pattern() function which can be used to
highlight patterns in the text being written to the stdout.

__EOF
fi

if [[ "${__USR_shHIGHLIGHT_PATTERN_ENABLE}" != "YES" ]] ; then
    return 0
fi

#### Definitions start:

function _Highlight_Pattern() {
    declare hl_color="red"
    declare -i case_insensitive=0

    declare output=""

    declare -A __color
    declare color_start=""
    declare color_end=""

    __color["black"]='\\033\[1;30m'
    __color["red"]='\\033\[1;31m'
    __color["green"]='\\033\[1;32m'
    __color["brown"]='\\033\[1;33m'
    __color["blue"]='\\033\[1;34m'
    __color["magenta"]='\\033\[1;35m'
    __color["cyan"]='\\033\[1;36m'
    __color["white"]='\\033\[1;37m'
    __color["nocolor"]='\\033\[0m'

    color_end="${__color["nocolor"]}"

    declare func_args=""
    while [[ ${#} -gt 0 ]]; do
        func_args="${1}"
        case "${func_args}" in
            -c|--color)
                hl_color="${2}"
                shift # shift past option
                shift # shift past arg
                ;;
            -i)
                case_insensitive=1
                shift # shift past option
                ;;
            --)
                shift
                break  ## stop parsing command-line
                ;;
            -h|--help)
                shift
                while read -r ; do
                    echo "${REPLY}"
                done <<-__EOF
Usage:
  ${FUNCNAME} [Options] [PATTERN]

Description: This function highlights the PATTERN in its input which is the
output of another command piped to this function.

Options:
  -c, --color color_name    Use 'color_name' to highlight pattern. If not used,
        the default color will be used. The available choices for 'color_name'
        are: black, red, green, brown, blue, magenta, cyan, white. The bright
        variant of the color will be used.
  -i    Use case insensitive search.
  -h, --help    Show this help.

Limitations: This function is not well tested and may fail at times; this is
experimental.

Examples:
  \`echo "A function to highlight pattern." | ${FUNCNAME} -c white -- highlight'
  \`echo "A function to highlight pattern." | ${FUNCNAME} highlight'

__EOF
                return 0
                ;;
            *)
                break  ## stop parsing command-line
                ;;
        esac
    done

    color_start="${__color[${hl_color}]}"
    if [[ -z "${color_start}" ]] ; then
        color_start="${__color["red"]}"
    fi

    if [[ ${case_insensitive} -eq 0 ]] ; then
        output="$( sed -r 's,('"${1}"'),'"${color_start}"'\1'"${color_end}"',g' )"
        shift
        while [[ ${#} -gt 0 ]] ; do
            output="$( echo "${output}" | sed -r 's,('"${1}"'),'"${color_start}"'\1'"${color_end}"',g' )"
            shift
        done
    else
        output="$( sed -r 's,('"${1}"'),'"${color_start}"'\1'"${color_end}"',ig' )"
        shift
        while [[ ${#} -gt 0 ]] ; do
            output="$( echo "${output}" | sed -r 's,('"${1}"'),'"${color_start}"'\1'"${color_end}"',ig' )"
            shift
        done
    fi
    echo -e "${output}"
}

unset __USR_shHIGHLIGHT_PATTERN_SHOW_INFO
unset __USR_shHIGHLIGHT_PATTERN_ENABLE
## End Of Script.

使用示例：

echo "Highlight words with colour of your choice, e.g. green." | _Highlight_Pattern -c green green
echo "A function to highlight word." | _Highlight_Pattern word
echo "A function to highlight phrase." | _Highlight_Pattern 'highlight phrase'
echo "A function to highlight pattern." | _Highlight_Pattern 'fun.*pattern'
echo "A function to highlight multiple words of your choice." | _Highlight_Pattern function highlight words
echo "Highlight multiple patterns with _Highlight_Pattern function." | _Highlight_Pattern 'H[^[:space:]]*' 'pa[^[:space:]]*'
echo "Use CaSe-Insensitive search." | _Highlight_Pattern -i 'case-insensitive'
PAGER= man bash | _Highlight_Pattern -i bash | less -R

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