Sponsored Content
Top Forums Shell Programming and Scripting Expect - assigning UNIX command output to a variable Post 302945171 by Chubler_XL on Tuesday 26th of May 2015 11:41:57 PM
Old 05-27-2015
Don't really know what you intend to do with the variable once you have it but this example might get you started:

Code:
#!/usr/bin/expect -f

set timeout 2
spawn -noecho ssh user@host
log_user 0
expect "*assword"
send "password\r"

expect {\$}
send "pidof some_process\r"
expect -re {\r\n(.*)\r\n(.*)\$}
set pidlist $expect_out(1,string)

if {[string length $pidlist] > 1} {
   puts "Found PID(s): $pidlist"
} else {
   puts "No PIDs found"
}

send "exit\r"
expect eof

Here we are matching on a $ symbol for the command prompt. Remove log_user 0 to see actual output while debugging.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Assigning output of command to a variable

Hi, I'm trying to assign the output of a command to a variable and then concat it with another string, however, it keeps overwriting the original string instead of adding on to the end of the string. Contents of test.txt --> This is a test var1="`head -n 1 test.txt`" echo $var1 (This is a... (5 Replies)
Discussion started by: oma04
5 Replies

2. Shell Programming and Scripting

assigning command output to a shell variable

I have the sql file cde.sql with the below contents: abcdefghij abcwhendefothers sdfghj when no one else when others wwhen%others exception when others Now I want to search for the strings containing when others together and ceck whether that does not occur more than once in the... (2 Replies)
Discussion started by: kprattip
2 Replies

3. Shell Programming and Scripting

Assigning output of command to a variable in shell

hi, I want to assign find command result into some temporary variable: jarPath= find /opt/lotus/notes/ -name $jarFile cho "the jar path $jarPath" where jarPath is temporary variable. Can anybody help on this. Thanks in advance ----Sankar (6 Replies)
Discussion started by: sankar reddy
6 Replies

4. Shell Programming and Scripting

Assigning output to a variable

I am new to unix shell scripting. I was trying to convert each lines in a file to upper case. I know how to convert the whole file. But here i have to do line by line. I am getting it in the below mentioned script #!/bin/bash #converting lower to upper in a file #tr "" "" <file1... (3 Replies)
Discussion started by: jpmena
3 Replies

5. Shell Programming and Scripting

Assigning output of a command to variable

When I run time -p <command>, it outputs: real X.XX user X.XX sys X.XXwhere X.XX is seconds. How I can take just that first number output, the seconds of real time, and assign that to a variable? (9 Replies)
Discussion started by: jeriryan87
9 Replies

6. UNIX for Dummies Questions & Answers

Assigning the output of a command to a variable, where there may be >1 line returned?

Hello I am using unix CLI commands for the Synergy CM software. The command basically searches for a folder ID and returns the names of the projects the folder sits in. The result is assigned to a variable: FIND_USE=`ccm folder -fu -u -f "%name"-"%version" ${FOLDER_ID}` When the command... (6 Replies)
Discussion started by: Glyn_Mo
6 Replies

7. Shell Programming and Scripting

Assigning last line to variable in expect

As part of an expect script, I have to convert a strange user ID to a conventional UNIX ID. To do this, I read the contents of a file and do a little awk magic. Here's that bit of the expect script: send "awk 'NF == 10 && \$NF == strange_user_id {print \$(NF-2)}' file_with_my_info\r" expect... (0 Replies)
Discussion started by: treesloth
0 Replies

8. Shell Programming and Scripting

Assigning output from awk to variable

I have a script whose contents are as below result= awk 's=100 END {print s }' echo "The result is" $result The desired output is The result is 100 My script is running without exiting and i am also not getting the desired output. Please help (5 Replies)
Discussion started by: bk_12345
5 Replies

9. Shell Programming and Scripting

Assigning bc output to a variable

I'm converting decimal to integer with bc, and I'd like to assign the integer output from bc to a variable 'val'. E.g. In the code below: If b is 5000.000, lines 6 and 8 will output: 5000 (5000.000+0.5)/1 | bc I'd like val to take the value 5000 though, rather than 5000.000 Does someone... (3 Replies)
Discussion started by: pina
3 Replies

10. UNIX for Dummies Questions & Answers

Tcsh command for assigning output of awk to variable

Hi I have a text file with 2 values and I am trying to assign each value to a variable and then write those to text files. So if the textfile is data.txt with 2 values x and y I want to assign mean=x, and stdev=y and then write these out in text files alongwith the id ($id has already been... (6 Replies)
Discussion started by: violin
6 Replies
RUNSCRIPT(1)						      General Commands Manual						      RUNSCRIPT(1)

NAME
runscript - script interpreter for minicom SYNOPSIS
runscript scriptname [logfile [homedir]] DESCRIPTION
runscript is a simple script interpreter that can be called from within the minicom communications program to automate tasks like logging in to a unix system or your favorite bbs. INVOCATION
The program expects a script name and optionally a filename and the user's home directory as arguments, and it expects that it's input and output are connected to the "remote end", the system you are connecting to. All messages from runscript ment for the local screen are directed to the stderr output. All this is automatically taken care of if you run it from minicom. The logfile and home directory parame- ters are only used to tell the log command the name of the logfile and where to write it. If the homedir is omitted, runscript uses the directory found in the $HOME environment variable. If also the logfile name is omitted, the log commands are ignored. KEYWORDS
Runscript recognizes the following commands: expect send goto gosub return ! exit print set inc dec if timeout verbose sleep break call log OVERVIEW OF KEYWORDS
send <string> <string> is sent to the modem. It is followed by a ' '. <string> can be: - regular text, eg 'send hello' - text enclosed in quotes, eg 'send "hello world"' Within <string> the following sequences are recognized: - newline - carriage return a - bell  - backspace c - don't send the default ' '. f - formfeed o - send character o (o is an octal number) Also $(environment_variable) can be used, for example $(TERM). Minicom passes three special environment variables: $(LOGIN), which is the username, $(PASS), which is the password, as defined in the proper entry of the dialing directory, and $(TERMLIN) which is the number of actual terminal lines on your screen (that is, the statusline excluded). print <string> Prints <string> to the local screen. Default followed by ' '. See the description of 'send' above. label: Declares a label (with the name 'label') to use with goto or gosub. goto <label> Jump to another place in the program. gosub <label> Jumps to another place in the program. When the statement 'return' is encountered, control returns to the statement after the gosub. Gosub's can be nested. return Return from a gosub. ! <command> Runs a shell for you in which 'command' is executed. On return, the variable '$?' is set to the exit status of this command, so you can subsequently test it using 'if'. exit [value] Exit from "runscript" with an optional exit status. (default 1) set <variable> <value> Sets the value of <variable> (which is a single letter a-z) to the value <value>. If <variable> does not exist, it will be created. <value> can be a integer value or another variable. inc <variable> Increments the value of <variable> by one. dec <variable> Decrements the value of <variable> by one. if <value> <operator> <value> <statement> Conditional execution of <statement>. <operator> can be <, >, != or =. Eg, 'if a > 3 goto exitlabel'. timeout <value> Sets the global timeout. By default, 'runscript' will exit after 120 seconds. This can be changed with this command. Warning: this command acts differently within an 'expect' statement, but more about that later. verbose <on|off> By default, this is 'on'. That means that anything that is being read from the modem by 'runscript', gets echoed to the screen. This is so that you can see what 'runscript' is doing. sleep <value> Suspend execution for <value> seconds. expect expect { pattern [statement] pattern [statement] [timeout <value> [statement] ] .... } The most important command of all. Expect keeps reading from the input until it reads a pattern that matches one of the specified ones. If expect encounters an optional statement after that pattern, it will execute it. Otherwise the default is to just break out of the expect. 'pattern' is a string, just as in 'send' (see above). Normally, expect will timeout in 60 seconds and just exit, but this can be changed with the timeout command. break Break out of an 'expect' statement. This is normally only useful as argument to 'timeout' within an expect, because the default action of timeout is to exit immediately. call <scriptname> Transfers control to another scriptfile. When that scriptfile finishes without errors, the original script will continue. log <text> Write text to the logfile. NOTES
If you want to make your script to exit minicom (for example when you use minicom to dial up your ISP, and then start a ppp or slip session from a script), try the command "! killall -9 minicom" as the last script command. The -9 option should prevent minicom from hanging up the line and resetting the modem before exiting. Well, I don't think this is enough information to make you an experienced 'programmer' in 'runscript', but together with the examples it shouldn't be too hard to write some useful script files. Things will be easier if you have experience with BASIC. The minicom source code comes together with two example scripts, scriptdemo and unixlogin. Especially the last one is a good base to build on for your own scripts. BUGS
Runscript should be built in to minicom. AUTHOR
Miquel van Smoorenburg, <miquels@drinkel.ow.org> Jukka Lahtinen, <walker@clinet.fi> User's Manual $Date: 2000/02/10 10:28:00 $ RUNSCRIPT(1)
All times are GMT -4. The time now is 06:07 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy