我有一些脚本,产生输出的颜色,我需要删除ANSI代码。
#!/bin/bash
exec > >(tee log) # redirect the output to a file but keep it on stdout
exec 2>&1
./somescript
输出为(在日志文件中):
java (pid 12321) is running...@[60G[@[0;32m OK @[0;39m]
我不知道如何在这里放置ESC字符,所以我把@放在它的位置。
我把剧本改成:
#!/bin/bash
exec > >(tee log) # redirect the output to a file but keep it on stdout
exec 2>&1
./somescript | sed -r "s/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g"
但是现在它给了我(在日志文件中):
java (pid 12321) is running...@[60G[ OK ]
我怎么也可以删除这个'@[60G?
也许有一种方法可以完全禁用整个脚本的着色?
恕我直言,大多数答案都过于努力地限制转义代码中的内容。结果,它们最终会丢失常见的代码,如[38;5;60m(前景色ANSI颜色60来自256色模式)。
它们还需要启用GNU扩展的-r选项。这些都不是必需的;它们只是让正则表达式读起来更好。
下面是一个更简单的答案,它处理256色转义,并在非gnu sed系统上工作:
./somescript | sed 's/\x1B\[[0-9;]\{1,\}[A-Za-z]//g'
这将捕获以[开头,有任意数量的小数和分号,并以字母结尾的任何内容。这应该捕获任何常见的ANSI转义序列。
对于所有可能的ANSI转义序列,这里有一个更大、更通用(但最少测试)的解决方案:
./somescript | sed 's/\x1B[@A-Z\\\]^_]\|\x1B\[[0-9:;<=>?]*[-!"#$%&'"'"'()*+,.\/]*[][\\@A-Z^_`a-z{|}~]//g'
(如果你有@edi9999的SI问题,在后面加上| sed "s/\x0f//g";这适用于任何控制字符,用不需要的字符的十六进制替换0f)
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
@jeff-bowman的解决方案帮助我摆脱了一些颜色代码。
我在正则表达式中添加了另一小部分,以便删除更多:
sed -r "s/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[mGK]//g" # Original. Removed Red ([31;40m[1m[error][0m)
sed -r "s/\x1B\[([0-9];)?([0-9]{1,2}(;[0-9]{1,2})?)?[mGK]//g" # With an addition, removed yellow and green ([1;33;40m[1m[warning][0m and [1;32;40m[1m[ok][0m)
^^^^^^^^^
remove Yellow and Green (and maybe more colors)