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Full Discussion: "goto" like command in UNIX
Top Forums Shell Programming and Scripting "goto" like command in UNIX Post 302891386 by wisecracker on Wednesday 5th of March 2014 11:34:57 AM
Old 03-05-2014
Quote:
Originally Posted by fpmurphy
Sure it does. The break and continue statements are limited gotos. And are always translated to jumps in assembly language.
Ahhh, but the concept of GOTO a line number and/or label is alien to the shell.

Joke code that works, ;o)
(Note the smiley.)
Code:
#!/bin/sh
# goto
goto() { eval $1 ; }
label1() { echo "Test line 1." ; }
label2() { echo "Test line 2." ; }
label3() { echo "Test line 3." ; }
goto label1
goto label2
goto label3
goto label1
goto label2
goto label3

I know, I know, it is dreadful coding...
Results in CygWin:-
Code:
AMIGA:~> goto.sh
Test line 1.
Test line 2.
Test line 3.
Test line 1.
Test line 2.
Test line 3.
AMIGA:~> _

 

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print(1)							   User Commands							  print(1)

NAME
print - shell built-in function to output characters to the screen or window SYNOPSIS
ksh print [ -Rnprsu [n]] [arg...] DESCRIPTION
ksh The shell output mechanism. With no flags or with flag - or -, the arguments are printed on standard output as described by echo(1). OPTIONS
The following options are supported: -n suppresses new-line from being added to the output. -R -r (raw mode) ignore the escape conventions of echo. The -R option will print all subsequent arguments and options other than -n. -p causes the arguments to be written onto the pipe of the process spawned with |& instead of standard output. -s causes the arguments to be written onto the history file instead of standard output. -u [ n ] flag can be used to specify a one digit file descriptor unit number n on which the output will be placed. The default is 1. EXIT STATUS
The following exit values are returned: 0 Successful operation. >0 Output file is not open for writing. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
echo(1), ksh(1), attributes(5) SunOS 5.10 15 Apr 1994 print(1)
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