用grep,sed,awk,tr删除文件中的空行或空格方法-linux-电脑编程网

删除空行: grep: grep -v '^$' filename sed: sed '/^$/d' filename. sed -n '/./p' filename awk: awk '/./ filename. tr -s "\n" file. for i in $(cat file);do echo $i;done. 在每行后 ...

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