linux下對符合條件的文件大小做匯總統計的簡單命令

（1）統計當前目錄下的 *txt 文件
du -c -h *txt
   
（2）統計當前目錄下的 *txt 文件, 並求出總大小
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）統計當前目錄下及其子目錄中的 +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）統計當前目錄下及其子目錄中的 *.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）統計當前目錄下及其子目錄中的之前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 "—"}'