|
文本内容
a.txt
type {
sfjslkfjslfjslf
lsjflsfjslfjs
sljfslfjslf
}aa
type {
sfkhsfkshf
141414lsjflsfjmb
s474ljfslfjslfm54
}bb
type {
098dgs
vnxvsb
zczgmvs
}cc
type {
blddgdlgj
d;gkdgkd
lkdjgld
}bb
...
现从文本a.txt中取出 type{...}bb的内容
zj@zj:~/Script/cushell/08.11.18$ awk 'BEGIN{RS=""}/}bb/{print $0}' awk.data
type {
sfkhsfkshf
141414lsjflsfjmb
s474ljfslfjslfm54
}bb
type {
blddgdlgj
d;gkdgkd
lkdjgld
}bb
zj@zj:~/Script/cushell/08.11.18$ awk 'BEGIN{RS=""}/}bb/{print $1,$2,$3}' awk.dat
type { sfkhsfkshf
type { blddgdlgj
可以看出这个时候FS把\n也当作一个分割符了.实际上
When RS is set to the null string, the newline character always acts as a field separator, in addition to whatever value FS may have.
设置RS为"\n\n"是一样的^_^
|
