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如何铺设一条线,然后从终端产出中翻开一条新线
原标题:How to grep a line followed by a newline from output in terminal

我的终点站有以下产出:

* These packages depend on app-portage/gentoolkit-0.6.5:

 * These packages depend on app-portage/getuto-1.11:
sys-apps/portage-3.0.63 (!build ? app-portage/getuto)

 * These packages depend on app-portage/portage-utils-0.96.1:
app-admin/perl-cleaner-2.31 (!pkgcore ? app-portage/portage-utils)

我怎么只看像<条码>、根基-<条码>等没有条线的灰色线?

What I have tried : some command | xargs grep -eF ".* "
But this returns File or Directory not found.

What I am trying to achieve?
In gentoo linux, eix-installed -a | xargs equery depends gives the dependency for all packages. I want to find the ones that have no dependencies listed.

问题回答

With:

awk -v RS=  !/
/ 

With RS empty awk splits its input into records by empty lines, and !/ / selects and prints records that do not contain newlines.





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