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命令運(yùn)行時(shí)使用CTRL+Z,強(qiáng)制當(dāng)前進(jìn)程轉(zhuǎn)為后臺(tái),并使之停止.

1. 使進(jìn)程恢復(fù)運(yùn)行(后臺(tái))

(1)使用命令bg

Example:

zuii@zuii-desktop:~/unp/tcpcliserv$ ./tcpserv01

*這里使用CTRL+Z,此時(shí)serv01是停止?fàn)顟B(tài)*

[1]+ Stopped ./tcpserv01

zuii@zuii-desktop:~/unp/tcpcliserv$ bg

[1]+ ./tcpserv01 & *此時(shí)serv01運(yùn)行在后臺(tái)*

zuii@zuii-desktop:~/unp/tcpcliserv$

(2)如果用CTRL+Z停止了幾個(gè)程序呢?

Example:

zuii@zuii-desktop:~/unp/tcpcliserv$ jobs

[1]- Running ./tcpserv01 &

[2]+ Stopped ./tcpcli01 127.0.0.1

zuii@zuii-desktop:~/unp/tcpcliserv$ bg %1

bash: bg：任務(wù) 1 已轉(zhuǎn)入后臺(tái) *后臺(tái)運(yùn)行*

2. 使進(jìn)程恢復(fù)至前臺(tái)運(yùn)行

Example:

zuii@zuii-desktop:~/unp/tcpcliserv$ ./tcpserv04

[1]+ Stopped ./tcpserv04

zuii@zuii-desktop:~/unp/tcpcliserv$ fg

./tcpserv04

總結(jié):

(1) CTRL+Z停止進(jìn)程并放入后臺(tái)

(2) jobs 顯示當(dāng)前暫停的進(jìn)程

(3) bg %N 使第N個(gè)任務(wù)在后臺(tái)運(yùn)行(%前有空格)

(4) fg %N 使第N個(gè)任務(wù)在前臺(tái)運(yùn)行

默認(rèn)bg,fg不帶%N時(shí)表示對(duì)最后一個(gè)進(jìn)程操作!