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Full Discussion: Howto make ksh skript bash-compatible with backticks
Top Forums Shell Programming and Scripting Howto make ksh skript bash-compatible with backticks Post 302326861 by doc_symbiosis on Friday 19th of June 2009 04:30:56 AM
Old 06-19-2009
Howto make ksh skript bash-compatible with backticks
I have the following ksh-script:
Code:
#!/bin/ksh
# Ueberprüfe, ob genau ein Parameter angegeben wurde
test "$#" -eq "1"  || { echo "USAGE: path_cleanup <PATH_NAME>"; return 1; }

# Ueberpruefe, ob awk und nawk installiert sind
test -x /bin/nawk || { echo "ERROR: nawk is not installed"; return 1; }
test -x /usr/xpg4/bin/awk || { echo "ERROR: awk is not installed"; return 1; }

# Schreibe den Inhalt von $1 nach PATH_CONTENT
PATH_CONTENT=$(eval echo \$$1)

# Loesche alle doppelt vorkkomenden Verzeichnisse aus PATH_CONTENT von hinten beginnend
PATH_CONTENT=`echo "$PATH_CONTENT" | /usr/xpg4/bin/awk -v RS=':' -v ORS=":" '!a[$0]++' | /bin/nawk 'NR==1'`

export $1=$PATH_CONTENT

Now I want to make this script bash compatible. Problem is line 10. When I replace it with the following, it returns the PID and not the path content:
Code:
PATH_CONTENT=`eval echo \$$1`

So, what do I have to do, because the $() doesn't work in bash.
 

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LEARN ABOUT HPUX

ucblinks

ucblinks(1B)					     SunOS/BSD Compatibility Package Commands					      ucblinks(1B)

NAME

       ucblinks - adds /dev entries to give SunOS 4.x compatible names to SunOS 5.x devices

SYNOPSIS

       /usr/ucb/ucblinks [-e rulebase] [-r rootdir]

DESCRIPTION

       ucblinks  creates symbolic links under the /dev directory for devices whose SunOS 5.x names differ from their SunOS 4.x names. Where possi-
       ble, these symbolic links point to the device's SunOS 5.x name rather than to the actual /devices entry.

       ucblinks does not remove unneeded compatibility links; these must be removed by hand.

       ucblinks should be called each time the system is reconfiguration-booted, after any new SunOS 5.x links that are needed have been  created,
       since the reconfiguration may have resulted in more compatibility names being needed.

       In  releases prior to SunOS 5.4, ucblinks used a  nawk rule-base to construct the SunOS 4.x compatible names. ucblinks no longer uses  nawk
       for the default operation, although  nawk rule-bases can still be specifed with the -e option.  The  nawk rule-base equivalent to the SunOS
       5.4 default operation can be found in /usr/ucblib/ucblinks.awk.

OPTIONS

       -e rulebase     Specify rulebase as the file containing nawk(1) pattern-action statements.

       -r rootdir      Specify rootdir as the directory under which dev and devices will be found, rather than the standard root directory /.

FILES

       /usr/ucblib/ucblinks.awk        sample rule-base for compatibility links

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       devlinks(1M), disks(1M), ports(1M), tapes(1M), attributes(5)

SunOS 5.10							    13 Apr 1994 						      ucblinks(1B)
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