1、sub、gsub
root@DESKTOP-1N42TVH:/home/test# ls test.txt root@DESKTOP-1N42TVH:/home/test# cat test.txt ## 测试数据 a 3 3 s 1 j z c m q e i 3 4 k h f 3 root@DESKTOP-1N42TVH:/home/test# awk '{sub(3,"xxx"); print $0}' test.txt ## sub替换第一个匹配的字符 a xxx 3 s 1 j z c m q e i xxx 4 k h f xxx root@DESKTOP-1N42TVH:/home/test# awk '{gsub(3,"xxx"); print $0}' test.txt ## gsub替换所有匹配的字符 a xxx xxx s 1 j z c m q e i xxx 4 k h f xxx
2、length
root@DESKTOP-1N42TVH:/home/test# cat test.txt a 3 3 a 3 3 s 1 j s 1 j z c sm z c m q e i388 q e i 3 4 k33 3 4 k h f 3 h f 3 root@DESKTOP-1N42TVH:/home/test# awk '{print length($0)}' test.txt 11 11 12 14 13 11 root@DESKTOP-1N42TVH:/home/test# awk '{print length($3)}' test.txt 1 1 2 4 3 1 root@DESKTOP-1N42TVH:/home/test# awk 'length($3) == 3' test.txt 3 4 k33 3 4 k
3、index / match
root@DESKTOP-1N42TVH:/home/test# ls test.txt root@DESKTOP-1N42TVH:/home/test# cat test.txt a 3 3 a 3 3 s 1 j s 1 j z c sm z c m q e i388 q e i 3 4 k33 3 4 k h f 3 h f 3 root@DESKTOP-1N42TVH:/home/test# awk '{print match($0, "j")}' test.txt 0 5 0 0 0 0 root@DESKTOP-1N42TVH:/home/test# awk '{print index($0, "j")}' test.txt 0 5 0 0 0 0
4、substr
root@DESKTOP-1N42TVH:/home/test# ls test.txt root@DESKTOP-1N42TVH:/home/test# cat test.txt a 3 3 a 3 3 s 1 j s 1 j z c sm z c m q e i388 q e i 3 4 k33 3 4 k h f 3 h f 3 root@DESKTOP-1N42TVH:/home/test# awk '{print substr($3, 1, 3)}' test.txt 3 j sm i38 k33 3 root@DESKTOP-1N42TVH:/home/test# awk '{print substr($3, 1, 2)}' test.txt 3 j sm i3 k3 3 root@DESKTOP-1N42TVH:/home/test# awk '{print substr($3, 2)}' test.txt m 388 33
5、split
root@DESKTOP-1N42TVH:/home/test# ls test.txt root@DESKTOP-1N42TVH:/home/test# cat test.txt test3_1_clean.fq.gz test3_2_clean.fq.gz test4_1_clean.fq.gz test4_2_clean.fq.gz test5_1_clean.fq.gz test5_2_clean.fq.gz root@DESKTOP-1N42TVH:/home/test# awk '{split($1, x, "_"); print x[1], x[2], $0}' test.txt test3 1 test3_1_clean.fq.gz test3_2_clean.fq.gz test4 1 test4_1_clean.fq.gz test4_2_clean.fq.gz test5 1 test5_1_clean.fq.gz test5_2_clean.fq.gz
版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 [email protected] 举报，一经查实，本站将立刻删除。