首先，tput提供了以下一些附加功能：提取终端信息(如设备，列数和行数)和清除屏幕上的数据。
First, here are some additional features that tput provides: extracting terminal information such as the devices, the number of columns and rows, and clearing data from the screen.
到目前为止所讨论的ps命令仅列出从终端会话启动的进程(注意清单14中的第二个例子的sid列，即会话id列)。
The ps commands discussed so far only list processes that were started from your terminal session (note the SID, or session id, column in the second example of Listing 14).
到目前为止所讨论的ps命令仅列出从终端会话启动的进程(注意清单14中的第二个例子的sid列，即会话id列)。
The ps commands discussed so far only list processes that were started from your terminal session (note the SID, or session id, column in the second example of Listing 14).
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