bash script testing version numbers

[hyperdaz]

I am interested in testing version numbers within bash script.

I have googled for good examples but have not seen what I am looking for..

if a product were to be be on version
3.33.10

How to check that that the patch was only 3.33.11 or version 3.34.0

for instance it could be that the next patch is a patch and it will only upgrade the version number by one or it is a release and will move totally away.

3.33.11 would be valid
3.33.12+ would fail
3.34.0 would be valid
but 3.34.1 would fail
or 3.34.01 would fail


If I have not explained full please do ask away...

Thanks for reading

hdaz

[blinky]

Break the new version and old version numbers to major, minor and revision numbers

eg.

OLD_VERSION=2.3.11
NEW_VERSION=2.3.12

c_major c_minor c_rev << EOF
`echo ${OLD_VERSION} | tr "." " "`
EOF

read n_major n_minor n_rev << EOF
`echo ${NEW_VERSION} | tr "." " "`
EOF

Then code the logic to compare the numbers.

[hyperdaz]

blinky,


Many thanks for the fast reply... my memory is failing me I have seen this example before someplace...

Thanks

[blinky]

Should be a read at the start of line "c_major c_minor c_rev << EOF"

eg.

OLD_VERSION=2.3.11
NEW_VERSION=2.3.12

read c_major c_minor c_rev << EOF
`echo ${OLD_VERSION} | tr "." " "`
EOF

read n_major n_minor n_rev << EOF
`echo ${NEW_VERSION} | tr "." " "`
EOF