linux下对符合条件的文件大小做汇总统计的简单命令

（1）统计当前目录下的 *txt 文件
du -c -h *txt
   
（2）统计当前目录下的 *txt 文件, 并求出总大小
du  *txt |awk 'BEGIN{count=0;size=0;}
     {count = count + 1; size = size + $1/1024;}
     END{print "Total count " count;
       print "Total size " size/1024 " GB" ;
       print "Avg size " size / count "MB"}'

（3）统计当前目录下及其子目录中的 +1000000k 文件
find . -size +1000000k -exec ls -l {} ; |awk 'BEGIN{count=0;size=0;}
     {count = count + 1; size = size + $5/1024/1024;}
     END{print "Total count " count;
       print "Total Size " size/1024 " GB" ;
       print "Avg Size " size / count "MB";
       print "—"}'

（4）统计当前目录下及其子目录中的 *.fastq
find . -name '*.fastq' -exec ls -l {} ; |awk 'BEGIN{count=0;size=0;}
     {count = count + 1; size = size + $5/1024/1024;}
     END{print "Total count " count;
       print "Total Size " size/1024 " GB" ;
       print "Avg Size " size / count "MB";
       print "—"}'

（5）统计当前目录下及其子目录中的之前2天的文件
find . -mtime -2 -exec ls -l {} ; |awk 'BEGIN{count=0;size=0;}
     {count = count + 1; size = size + $5/1024/1024;}
     END{print "Total count " count;
       print "Total Size " size/1024 " GB" ;
       print "Avg Size " size / count "MB";
       print "—"}'