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本帖最后由 1cpuer 于 2018-09-01 20:50 编辑
➜ cat file
echo "\d34d\de74\deee " BMW MR $
# [ /home/soio/1bs/awks ] {2018-09-01 19:14:19}: 1535800459:0;
➜ awk -F'[\\]' '{print $4}' file
awk: 致命错误: Unmatched [, [^, [:, [., or [=: /[\]/
#--#
# [ /home/soio/1bs/awks ] {2018-09-01 19:14:25}: 1535800465:0;
➜ awk -F'\' '{print $4}' file
deee " BMW MR $
# [ /home/soio/1bs/awks ] {2018-09-01 20:47:34}: 1535806054:0;
➜ awk -F "\\" '{print $4}' file
deee " BMW MR $
#--#
# [ /home/soio/1bs/awks ] {2018-09-01 20:47:41}: 1535806061:0;
➜ awk -F "[\\]" '{print $4}' file
awk: 警告: 转义序列“\]”被当作单纯的“]”
awk: 致命错误: Unmatched [, [^, [:, [., or [=: /[]/
解: x = ?
输出deee ; 双引号 + [] 不理解
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