shell cut命令用于删除字符

Question

grep的＆切低于当前代码输出51315123&category_id ，我需要删除&category_id可以减少被用来做呢？

... | tr '?' '\n' | grep "^recipient_dvd_id=" | cut -d '=' -f 2 >> dvdIDs.txt

Answer 1

是的，我会这么认为

... | cut -d '&' -f 1

Answer 2

If you're open to using AWK:

... | tr '?' '\n' | awk -F'[=&]' '/^recipient_dvd_id=/ {print $2}' >> dvdIDs.txt

AWK handles the regex and splitting fields, in this case using both '=' and '&' as field separators and printing the second column. Otherwise, you will need a second cut statement.