mjhjmtu

I use autoexpect generated a script.exp. see following.

how to understand

expect -exact " r
Type ha for help on aliasesr
r
]0;luoric@linux-pc-64:/home/luoric/tmp[01;34mluoric@linux-pc-64[01;34m tmp $[00m " ?

and after I run script.exp. I got "ls" and "ls -l" result correctly.
and get command line prompt. but when I hit enter. there is no command line prompt. I have to use ctrl C, to exit so I can continue enter command from terminal.

What I'm missing?

#!/usr/bin/expect -f
#
# This Expect script was generated by autoexpect on Tue Dec 18 09:42:08 2018
# Expect and autoexpect were both written by Don Libes, NIST.
#
# Note that autoexpect does not guarantee a working script. It
# necessarily has to guess about certain things. Two reasons a script
# might fail are:
#
# 1) timing - A surprising number of programs (rn, ksh, zsh, telnet,
# etc.) and devices discard or ignore keystrokes that arrive "too
# quickly" after prompts. If you find your new script hanging up at
# one spot, try adding a short sleep just before the previous send.
# Setting "force_conservative" to 1 (see below) makes Expect do this
# automatically - pausing briefly before sending each character. This
# pacifies every program I know of. The -c flag makes the script do
# this in the first place. The -C flag allows you to define a
# character to toggle this mode off and on.

set force_conservative 0 ;# set to 1 to force conservative mode even if
 ;# script wasn't run conservatively originally
if $force_conservative 
 set send_slow 1 .1
 proc send ignore arg 
 sleep .1
 exp_send -s -- $arg
 


#
# 2) differing output - Some programs produce different output each time
# they run. The "date" command is an obvious example. Another is
# ftp, if it produces throughput statistics at the end of a file
# transfer. If this causes a problem, delete these patterns or replace
# them with wildcards. An alternative is to use the -p flag (for
# "prompt") which makes Expect only look for the last line of output
# (i.e., the prompt). The -P flag allows you to define a character to
# toggle this mode off and on.
#
# Read the man page for more info.
#
# -Don


set timeout -1
spawn $env(SHELL)
match_max 100000
expect -exact " r
Type ha for help on aliasesr
 r
]0;luoric@linux-pc-64:/home/luoric/tmp[01;34mluoric@linux-pc-64[01;34m tmp $[00m "
send -- "lsr"
expect -exact "lsr
[0m[00;32manswerbot[0m [00;32mexecmds.sh[0m [00;32mexecmds.sh.exp[0m [00;32mgdb.sh[0m [00min[0m [00mnohup.out[0m [00;32mquestions[0m [00;32mscript.exp[0m [00mspawn[0m [00;32mstb.sh[0m [00;32mtarget.exp[0m [00;32mtarget.sh[0m [00;32mtel[0m [00mtel.log[0m [00;32mterm[0mr
]0;luoric@linux-pc-64:/home/luoric/tmp[01;34mluoric@linux-pc-64[01;34m tmp $[00m "
send -- "ls -lr"
expect -exact "ls -lr
total 56r
-rwxrwxr-x 1 luoric ccuser 256 Dec 10 14:26 [0m[00;32manswerbot[0mr
-rwxrwxr-x 1 luoric ccuser 264 Dec 13 17:07 [00;32mexecmds.sh[0mr
-rwxrwxr-x 1 luoric ccuser 424 Dec 13 17:13 [00;32mexecmds.sh.exp[0mr
-rwxrwxr-x 1 luoric ccuser 118 Dec 17 13:44 [00;32mgdb.sh[0mr
-rw-rw-r-- 1 luoric ccuser 8 Dec 10 12:13 [00min[0mr
-rw------- 1 luoric ccuser 6920 Dec 14 15:35 [00mnohup.out[0mr
-rwxrwxr-x 1 luoric ccuser 160 Dec 10 14:30 [00;32mquestions[0mr
-rwxrwxr-x 1 luoric ccuser 0 Dec 18 09:42 [00;32mscript.exp[0mr
-rw-rw-r-- 1 luoric ccuser 0 Dec 13 12:56 [00mspawn[0mr
-rwxrwxr-x 1 luoric ccuser 103 Dec 10 14:41 [00;32mstb.sh[0mr
-rwxrwxr-x 1 luoric ccuser 463 Dec 17 14:57 [00;32mtarget.exp[0mr
-rwxrwxr-x 1 luoric ccuser 140 Dec 17 13:50 [00;32mtarget.sh[0mr
-rwxrwxr-x 1 luoric ccuser 864 Dec 17 11:46 [00;32mtel[0mr
-rw-rw-r-- 1 luoric ccuser 1201 Dec 11 14:03 [00mtel.log[0mr
-rwxrwxr-x 1 luoric ccuser 153 Dec 13 13:13 [00;32mterm[0mr
]0;luoric@linux-pc-64:/home/luoric/tmp[01;34mluoric@linux-pc-64[01;34m tmp $[00m "
send -- "exitr"
expect eof

As a (formatted) followup to my comment, this is the actual take-away from that autoexpect script:

#!/usr/bin/expect
set prompt "$[00m $"
spawn bash
expect -re $prompt
send -- "lsr"
expect -re $prompt
send -- "ls -lr"
send -- "exitr"
expect eof

That's what I mean about removing 95%.

To actually answer your question, if you want to interact with the spawned shell, change

expect eof

to

interact

That stops the scripted interaction and puts the user in command.