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Operating Systems Solaris Run automated bash commands from sh login shell Post 303015967 by randman1 on Tuesday 17th of April 2018 09:18:28 AM
Old 04-17-2018
Run automated bash commands from sh login shell

I use plink.exe to automate remote commands that return data to Windows machines. This works well on newer servers running Red Hat since the commands were developed for bash and the designated user's login shell is bash. I need to also support older servers which are running Solaris 10 but the designated user's login shell is sh. I would like to use the same commands and be able to use array variables which apparently are not supported by sh. The commands are saved in a local text file and the file name is used in plink's -m option. Each command is then executed via SSH. An example of some of the file contents are below.
Code:
cd /opt/audit
tsmin=`perl -MTime::Local -le 'print timelocal(0,0,0,7,10,2017)'`
tsmax=`perl -MTime::Local -le 'print timelocal(59,59,23,7,10,2017)'`
echo "R,$tsmin,$tsmax"
filelist=`ls FaultEvent_* | nawk -F'_' '$2$3>=2017110700 && $2$3<=2017110723 {print $0}'`
nawk -F',' -v tsmin=$tsmin -v tsmax=$tsmax '$1=="A" && $2>=tsmin && $2<=tsmax {OFS=",";$3=strftime("%F %T",$2);print $0}' $filelist /dev/null | sed 's/ *, */,/g'
nawk -F',' '$9 ~ "component" {OFS=",";print "S," $0}' ObjState_20171107 /dev/null | sed 's/ *, */,/g'
filelist=`ls DomainEvent_* | nawk -F'_' '$2$3>=2017110700 && $2$3<=2017110723 {print $0}'`
nawk -F',' '$12 ~ "component" {OFS=",";$3=strftime("%F %T",$2);print $0}' $filelist /dev/null | sed 's/ *, */,/g'

I cannot figure out how to format these commands to run under a bash subshell and return stdout. I thought the following would do it but I get "undefined variable" messages and no return. I also tried other variations with similar results.
Code:
/bin/bash << eof
cd /opt/audit
tsmin=`perl -MTime::Local -le 'print timelocal(0,0,0,7,10,2017)'`
...
echo "R,$tsmin,$tsmax"
...
eof

How can I run a series of commands in a bash shell from sh login shell and return stdout. Extra credit: I also need an alternative to strftime in the nawk statements since these Solaris 10 boxes do not have this function.
 

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OPENVT(1)							     Linux 1.x								 OPENVT(1)

NAME
openvt - start a program on a new virtual terminal (VT). SYNOPSIS
openvt [-c vtnumber] [OPTIONS] [--] command DESCRIPTION
openvt will find the first available VT, and run on it the given command with the given command options, standard input, output and error are directed to that terminal. The current search path ($PATH) is used to find the requested command. If no command is specified then the environment variable $SHELL is used. OPTIONS -c, --console=VTNUMBER Use the given VT number and not the first available. Note you must have write access to the supplied VT for this to work; -f, --force Force opening a VT without checking whether it is already in use; -e, --exec Directly execute the given command, without forking. This option is meant for use in /etc/inittab; -s, --switch Switch to the new VT when starting the command. The VT of the new command will be made the new current VT; -u, --user Figure out the owner of the current VT, and run login as that user. Suitable to be called by init. Shouldn't be used with -c or -l; -l, --login Make the command a login shell. A - is prepended to the name of the command to be executed; -v, --verbose Be a bit more verbose; -w, --wait wait for command to complete. If -w and -s are used together then openvt will switch back to the controlling terminal when the com- mand completes; -V, --version print program version and exit; -h, --help show this text and exit. -- end of options to openvt. NOTE
If openvt is compiled with a getopt_long() and you wish to set options to the command to be run, then you must supply the end of options -- flag before the command. EXAMPLES
openvt can be used to start a shell on the next free VT, by using the command: openvt bash To start the shell as a login shell, use: openvt -l bash To get a long listing you must supply the -- separator: openvt -- ls -l HISTORY
Earlier, openvt was called open. It was written by Jon Tombs <jon@gtex02.us.es or jon@robots.ox.ac.uk>. The -w idea is from "sam". SEE ALSO
chvt(1), doshell(8), login(1) 19 Jul 1996 V1.4 OPENVT(1)
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