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2024年1月9日发(作者：switchcase后语句组语句用法)
expect语法基础： while、for 循环、if 语句的用法示例 - cbwcwy - 博客园
==两种for循环的写法
for {set i 0} {$i<=10} {incr i} {#i默认增量是1，即等价incr i 1。注意这个反括号一定要写在这行行末：args: should be "for start test next command"
............
.............}
Q：能不能改为i为我指定的几个数就好。比如我指定i为 3 5 6 7 9这几个数？ 谢谢。
foreach i { 1 3 5 7 9 } {
puts "$i"
}
注:expect 用的是tcl语法，不是shell语法，或者用switch
==for/while循环写法
[15:33:05-Bob@hzling08:~/test/tcl]-(1109)No.108->$ cat
#!/usr/bin/expect --
# /
# for Bob testing
#
puts "---1---"
for {set i 0} {$i < 10} {incr i} {
puts "I inside first loop: $i"
}
puts "---2---"
for {set i 3} {$i < 2} {incr i} {
puts "I inside second loop: $i"
}
puts "---3---"
puts "Start"
set i 0
while {$i < 10} {
puts "I inside third loop: $i"
incr i
puts "I after incr: $i"
}
set i 0
incr i
puts "---4---"
puts "$i"
# This is equivalent to:
set i [expr {$i + 1}] #expect里的加减法
puts "---5---"
puts "$i"
运行：
[15:33:09-Bob@hzling08:~/test/tcl]-(1110)No.109->$ ./
---1---
I inside first loop: 0
I inside first loop: 1
I inside first loop: 2
I inside first loop: 3
I inside first loop: 4
I inside first loop: 5
I inside first loop: 6
I inside first loop: 7
I inside first loop: 8
I inside first loop: 9
---2---
---3---
Start
I inside third loop: 0
I after incr: 1
I inside third loop: 1
I after incr: 2
I inside third loop: 2
I after incr: 3
I inside third loop: 3
I after incr: 4
I inside third loop: 4
I after incr: 5
I inside third loop: 5
I after incr: 6
I inside third loop: 6
I after incr: 7
I inside third loop: 7
I after incr: 8
I inside third loop: 8
I after incr: 9
I inside third loop: 9
I after incr: 10
---4---
1
---5---
2
===if的写法
if { $sync_flag == "true" } {
puts "Sync start at [clock format [clock seconds]]"
catch {eval exec ${TOOL_HOME}/bin/${sync_cmd} ${sync_parm} } output
puts $output
if { $output eq "SYNC complete!" } {
puts "SYNC complete!"
} else {
puts "SYNC error!"
exit 1
}
puts "Sync end at [clock format [clock seconds]]"
}
===ping的例子
set p_loop 5
while { $p_loop } {
send_user "nStpe 1 Ping "
set timeout 60
send "ping 10.1.1.1 -c5r"
expect {
"64 bytes" {
send_user "ok"
set p_loop 0
}
timeout {
set p_loop [expr $p_loop-1] #expect里的加减法
send_user "failed.n"
}
eof {
send_user "ping 10.1.1.1 -c5 FAILn"
exit 1
}
}
===expect读取文件的例子
#!/usr/bin/expect --
# /counting_file_
#open a file
set fd [open "/home/xiabao/" r]
set number 0
# read each line
while { [gets $fd line] >= 0 } { incr number }
puts "Number of lines: $number"
close $fd
==当前用户是root，我想用 su - oracle，然后在oracle下使用 expect -c 命令，不想用脚本，想用一行命令实现
su - oracle -c "expect -c 'spawn sqlplus / as sysdba; expect "SQL>"; send "alter user sys
identified by 123456 account unlock;r"; send "exit;r"'"
查看文档来源：/iloveyoucc/archive/2012/06/17/
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