下面的正则表达式将错过一些ANSI转义码序列，以及3位颜色。regex101.com的示例和修复。

用这个代替:

./somescript | sed -r 's/\x1B\[(;?[0-9]{1,3})+[mGK]//g'

我也有问题，有时，SI字符出现。

例如，输入echo "$(tput setaf 1)foo$(tput sgr0) bar"

这里有一种方法也可以剥离SI字符(shift in) (0x0f)

./somescript | sed -r "s/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[mGK]//g" | sed "s/\x0f//g"

这是一个纯Bash解决方案。

保存为strip-escape-codes.sh，使其可执行，然后执行<command- production - colour -output> | ./strip-escape-codes.sh。

注意，这将删除所有的ANSI转义码/序列。如果你只想去除颜色，用“m”替换[a-zA-Z]。

Bash >= 4.0:

#!/usr/bin/env bash

# Strip ANSI escape codes/sequences [$1: input string, $2: target variable]
function strip_escape_codes() {
    local _input="$1" _i _char _escape=0
    local -n _output="$2"; _output=""
    for (( _i=0; _i < ${#_input}; _i++ )); do
        _char="${_input:_i:1}"
        if (( ${_escape} == 1 )); then
            if [[ "${_char}" == [a-zA-Z] ]]; then
                _escape=0
            fi
            continue
        fi
        if [[ "${_char}" == $'\e' ]]; then
            _escape=1
            continue
        fi
        _output+="${_char}"
    done
}

while read -r line; do
    strip_escape_codes "${line}" line_stripped
    echo "${line_stripped}"
done

Bash < 4.0:

#!/usr/bin/env bash

# Strip ANSI escape codes/sequences [$1: input string, $2: target variable]
function strip_escape_codes() {
    local input="${1//\"/\\\"}" output="" i char escape=0
    for (( i=0; i < ${#input}; ++i )); do         # process all characters of input string
        char="${input:i:1}"                       # get current character from input string
        if (( ${escape} == 1 )); then             # if we're currently within an escape sequence, check if
            if [[ "${char}" == [a-zA-Z] ]]; then  # end is reached, i.e. if current character is a letter
                escape=0                          # end reached, we're no longer within an escape sequence
            fi
            continue                              # skip current character, i.e. do not add to ouput
        fi
        if [[ "${char}" == $'\e' ]]; then         # if current character is '\e', we've reached the start
            escape=1                              # of an escape sequence -> set flag
            continue                              # skip current character, i.e. do not add to ouput
        fi
        output+="${char}"                         # add current character to output
    done
    eval "$2=\"${output}\""                       # assign output to target variable
}

while read -r line; do
    strip_escape_codes "${line}" line_stripped
    echo "${line_stripped}"
done

我无法从其他答案中得到满意的结果，但下面的答案对我来说很有用:

somescript | sed -r "s/[[:cntrl:]]\[[0-9]{1,3}m//g"

如果我只删除了控制字符“^[”，它就会留下其余的颜色数据，例如“33m”。加上颜色代码和“m”就成功了。我对s/\x1B//g不工作感到困惑，因为\x1B[31m当然可以与echo一起工作。

在纯Bash中更简单的函数从文本流中过滤出常见的ANSI代码:

# Strips common ANSI codes from a text stream

shopt -s extglob # Enable Bash Extended Globbing expressions
ansi_filter() {
  local line
  local IFS=
  while read -r line || [[ "$line" ]]; do
    printf '%s\n' "${line//$'\e'[\[(]*([0-9;])[@-n]/}"
  done
}

See:

扩展Globbing gnu.org: Bash参数扩展

有争议的想法是重新配置该进程环境的终端设置，让进程知道终端不支持颜色。

我想到了像TERM=xterm-mono ./somescript这样的东西。YMMV与您特定的操作系统和脚本理解终端颜色设置的能力。

我遇到了这个问题/答案，试图做一些类似于op的事情。我找到了一些其他有用的资源，并在此基础上提出了一个日志脚本。在这里发帖，希望能帮助到其他人。

深入研究这些链接有助于理解一些重定向，我不会尝试解释，因为我自己也刚刚开始理解它。

Usage会将彩色输出呈现到控制台，同时将颜色代码从文本中剥离到日志文件。它还将在日志文件中包含任何无效命令的stderr。

编辑:在底部添加更多的使用情况，以显示如何以不同的方式登录

#!/bin/bash
set -e
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

. $DIR/dev.conf
. $DIR/colors.cfg

filename=$(basename ${BASH_SOURCE[0]})
# remove extension
# filename=`echo $filename | grep -oP '.*?(?=\.)'`
filename=`echo $filename | awk -F\. '{print $1}'`
log=$DIR/logs/$filename-$target

if [ -f $log ]; then
  cp $log "$log.bak"
fi

exec 3>&1 4>&2
trap 'exec 2>&4 1>&3' 0 1 2 3
exec 1>$log 2>&1


# log message
log(){
    local m="$@"
    echo -e "*** ${m} ***" >&3
    echo "=================================================================================" >&3
  local r="$@"
    echo "================================================================================="
    echo -e "*** $r ***" | sed -r "s/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[mGK]//g"
    echo "================================================================================="
}

echo "=================================================================================" >&3
log "${Cyan}The ${Yellow}${COMPOSE_PROJECT_NAME} ${filename} ${Cyan}script has been executed${NC}"
log $(ls) #log $(<command>)

log "${Green}Apply tag to image $source with version $version${NC}"
# log $(exec docker tag $source $target 3>&2) #prints error only to console
# log $(docker tag $source $target 2>&1) #prints error to both but doesn't exit on fail
log $(docker tag $source $target 2>&1) && exit $? #prints error to both AND exits on fail
# docker tag $source $target 2>&1 | tee $log # prints gibberish to log
echo $? # prints 0 because log function was successful
log "${Purple}Push $target to acr${NC}"

以下是其他有用的链接:

我可以使用sed操作一个变量在bash? https://www.cyberciti.biz/faq/redirecting-stderr-to-stdout/ https://unix.stackexchange.com/questions/42728/what-does-31-12-23-do-in-a-script https://serverfault.com/questions/103501/how-can-i-fully-log-all-bash-scripts-actions https://www.gnu.org/software/bash/manual/bash.html#Redirections