Oberon/A2/MyA2

MyA2 () { \ #!/usr/bin/ash # A function or script to start UnixAos or repository based A2 with # a working directory which can be in a removable flash store. # A flash store is accommodated in multiple machines by copying # machine specific configurations into Configuration.XML and # Oberon.Text. # # Conditions for this to work. # * The volume containing the working files has a reliable identity. # All Unix-like systems recognize a UUID. Refer to lsblk and blkid. # * If /etc/fstab has a specification for the working volume it # should be consistent with the names and mount command below. Eg. # UUID=40d81923-8f9d-4964-b724-87bcf2731432a /home/me/A ext2 defaults,user,users,exec,noauto 0 0 # * The user can fsck the working filesystem. # A line such as the following may be required in /etc/sudoers.d/sudoers. # me mycomputer = NOPASSWD: /sbin/fsck # Test fsck interactively. # * If the working volume is removeable, the user can mount it. # Note the user option in /etc/fstab. # * Prior to revision 10272, UnixAos attempts to create the link # <workingDirectory>/.aoshome to /usr/aos but the FAT file system # doesn't provide links. Resolved by reformatting to ext2. # Ext2 in Wikipedia. # # UUID of a stainless steel Kingston USB store. workingVolume=40d81969-8f9d-4964-b214-87bcf273192a printf "The UUID assigned to 'workingVolume' is %s.\n" "$workingVolume" # easyosWorkingDirectory=/mnt/A printf "easyosWorkingDirectory=%s\n" "$easyosWorkingDirectory" devuanWorkingDirectory=/mnt/A printf "devuanWorkingDirectory=%s\n" "$devuanWorkingDirectory" # # For UnixAOS preceding revision.10272. oldAosStartScript=/usr/bin/aos printf "oldAosStartScript=%s\n" "$oldAosStartScript" # For UnixAOS revision.10272. newAosStartScript=/usr/local/bin/a2 printf "newAosStartScript=%s\n" "$newAosStartScript" # For repository based A2. # repositoryStartScript=<somewhere>/<repository>/<platform>/<script> if [ "$(getconf LONG_BIT)" = "32" ]; then repositoryStartScript=/mnt/A/A2/Linux32/a2.sh elif [ "$(getconf LONG_BIT)" = "64" ]; then repositoryStartScript=/mnt/A/A2/Linux64/a2.sh else printf "Neither a Linux 32 bit nor Linux 64 bit system.\n" fi printf "repositoryStartScript=%s\n" "$repositoryStartScript" # # For any hostname violating Oberon file name syntax, make a conformant name. # https://tldp.org/LDP/abs/html/testconstructs.html if [[ $(hostname) = xo-53-1d-bb* ]]; then h="xo" elif [[ $(hostname) = joule* ]]; then h="joule" # Add more cases here. else h=$(hostname --short) fi printf "Shortened hostname, h = $h\n" A2 () { contextDir=$PWD cd $workingDirectory printf "Switched to working directory.\n" if ! test -f Configuration.$h.XML ; then printf "Configuration.$h.XML not present in %s. Aborting.\n" "$workingDirectory" else printf "Copying Configuration.$h.XML to Configuration.XML.\n" /bin/cp Configuration.$h.XML Configuration.XML if ! test -f Oberon.$h.Text ; then printf "Oberon.$h.Text not present in $workingDirectory. Aborting.\n" else printf "Copying Oberon.$h.Text to Oberon.Text.\n" /bin/cp Oberon.$h.Text Oberon.Text /bin/rm --force --verbose AOS*.Log /bin/rm --force --verbose Trap*.txt /bin/rm --force --verbose .tmp.* printf "Starting A2 system.\n" $startScript fi fi cd $contextDir printf "MyA2 exited normally.\n" } EvaluateWorkingVolume () { printf "startScript=%s\n" "$startScript" printf "Search for working volume can take a few seconds.\n" if ! lsblk -alno UUID | grep -q $workingVolume ; then printf "The UUID assigned to the workingVolume variable is not available. Aborting.\n" printf "\n" printf "Check that the intended working volume is connected.\n" printf "Execute a command such as 'blkid /dev/sdXn' to obtain the UUID.\n" printf "To correct the UUID assigned to 'workingVolume', edit the declaration of \n" printf "this MyA2 function, declare with a shell command such as '. ShellFunctions' \n" printf "and try MyA2 again.\n" else printf "$workingVolume containing working files is connected.\n" if test -n "$(findmnt -nrS UUID=$workingVolume)" ; then printf "Working volume is mounted. Ideally, consistent with the subsequent mount command.\n" A2 else printf "Working volume is not mounted.\n" if fsck -p UUID=$workingVolume ; then printf "Filesystem in $workingVolume passed fsck.\n" # busybox mount lacks the -U option. Therefore mount /dev/*. mount -v "$(blkid --uuid $workingVolume)" $workingDirectory A2 else printf "fsck attempted repair of $workingVolume. Try again.\n" fi fi fi } if test -f /etc/DISTRO_SPECS > /dev/null ; then if ( grep -- EasyOS /etc/DISTRO_SPECS > /dev/null ) ; then printf "This is an EasyOS system. Therefore,\n" workingDirectory="$easyosWorkingDirectory" startScript=$repositoryStartScript EvaluateWorkingVolume fi elif [ -f "/etc/devuan_version" ] ; then printf "Probably a Devuan system. Therefore,\n" workingDirectory="$devuanWorkingDirectory" startScript=$repositoryStartScript EvaluateWorkingVolume elif [ -f "/etc/debian_version" ] ; then printf "Probably a Debian 32 bit system. Therefore,\n" workingDirectory="$devuanWorkingDirectory" startScript=$oldAosStartScript EvaluateWorkingVolume else printf "Operating system not recognized. A2 not started.\n" fi } # End MyA2.