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Full Discussion: There's a unknown command on line 1 and i don't know whats causing it.
Top Forums Shell Programming and Scripting There's a unknown command on line 1 and i don't know whats causing it. Post 302839211 by thatguy565 on Wednesday 31st of July 2013 06:13:45 PM
Old 07-31-2013
There's a unknown command on line 1 and i don't know whats causing it.
My OS is Linux GL version 2.4.26. I am trying to make a shell script that outputs a chart displaying info of who is online, boot time, and the real time, I have manage to get it to work, but I still get the error "./user/script: line 1: : command not found." I do in fact have access to root, if that makes any difference. Although i do expect this to be either something i did wrong but just don't understand, or a bug in the Linux system.

Code:
#!/bin/bash

# it looks ugly without a clear... sooooo

clear

# This section is the time determining section

# the time command

tme=$(date);

# This is the system boot time determining section

# command for looking at boot time

boot=$(who -b);

# This section is the Users online determining section


# setting w and its arguments

wr=$(w -h root);
wg=$(w -h glucero565);
wa=$(w -h alucero565);

# determining weither or not root is logged in

if [ "$wr" != "" ]
	then
		line1=$(w -h root);
	else
		line1=$("");
fi

# determining weither or not glucero565 is logged in

if [ "$wg" != "" ]
	then
		line2=$(w -h glucero565);
	else
		line2=$("");
fi

# determining weither or not alucero565 is loggin in

if [ "$wa" != "" ]
	then
		line3=$(w -h alucero565);
	else
		line3=$("");
fi

# inserting parts of the chart

echo "                                   Info                                            "
echo "+---------------------------------------------------------------------------------+"
echo "|                                                                                 |"

# inserting current time here

echo "|                           $tme                          |"

# inserting boot time here

echo "|                  $boot                             |"

# determining what to put in the first line of the User section of the chart

if [ "$line1" == "" ]
	then
		echo "|                                                                                 |"
	else
		echo "| $line1 |"
fi

# determining what to put in the second line of the chart

if [ "$line2" == "" ]
	then
		echo "|                                                                                 |"
	else
		echo "| $line2 |"
fi

# determining what to put in the third line of the chart

if [ "$line3" == "" ]
	then
		echo "|                                                                                 |"
	else
		echo "| $line3 |"
fi

# inserting parts of the chart

echo "|                                                                                 |"
echo "+---------------------------------------------------------------------------------+"

 

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LEARN ABOUT OSX

script

SCRIPT(1)						    BSD General Commands Manual 						 SCRIPT(1)

NAME

     script -- make typescript of terminal session

SYNOPSIS

     script [-akq] [-t time] [file [command ...]]

DESCRIPTION

     The script utility makes a typescript of everything printed on your terminal.  It is useful for students who need a hardcopy record of an
     interactive session as proof of an assignment, as the typescript file can be printed out later with lpr(1).

     If the argument file is given, script saves all dialogue in file.	If no file name is given, the typescript is saved in the file typescript.

     If the argument command is given, script will run the specified command with an optional argument vector instead of an interactive shell.

     The following options are available:

     -a      Append the output to file or typescript, retaining the prior contents.

     -k      Log keys sent to program as well as output.

     -q      Run in quiet mode, omit the start and stop status messages.

     -t time
	     Specify time interval between flushing script output file.  A value of 0 causes script to flush for every character I/O event.  The
	     default interval is 30 seconds.

     The script ends when the forked shell (or command) exits (a control-D to exit the Bourne shell (sh(1)), and exit, logout or control-D (if
     ignoreeof is not set) for the C-shell, csh(1)).

     Certain interactive commands, such as vi(1), create garbage in the typescript file.  The script utility works best with commands that do not
     manipulate the screen.  The results are meant to emulate a hardcopy terminal, not an addressable one.

ENVIRONMENT

     The following environment variable is utilized by script:

     SHELL  If the variable SHELL exists, the shell forked by script will be that shell.  If SHELL is not set, the Bourne shell is assumed.  (Most
	    shells set this variable automatically).

SEE ALSO

     csh(1) (for the history mechanism).

HISTORY

     The script command appeared in 3.0BSD.

BUGS

     The script utility places everything in the log file, including linefeeds and backspaces.	This is not what the naive user expects.

     It is not possible to specify a command without also naming the script file because of argument parsing compatibility issues.

     When running in -k mode, echo cancelling is far from ideal.  The slave terminal mode is checked for ECHO mode to check when to avoid manual
     echo logging.  This does not work when in a raw mode where the program being run is doing manual echo.

BSD
								 January 22, 2004							       BSD
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