65 lines
2 KiB
Bash
65 lines
2 KiB
Bash
# $Id$
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check_version() {
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: <<inline_doc
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Tests for a minimum version level. Compares to version numbers and forces an
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exit if minimum level not met.
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NOTE: This test will fail on versions containing alpha chars. ie. jpeg 6b
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usage: check_version "2.6.2" "`uname -r`" "KERNEL"
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check_version "3.0" "$BASH_VERSION" "BASH"
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check_version "3.0" "`gcc -dumpversion`" "GCC"
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input vars: $1=min acceptable version
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$2=version to check
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$3=app name
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externals: --
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modifies: --
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returns: nothing
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on error: write text to console and dies
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on success: write text to console and returns
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inline_doc
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declare -i major minor revision change
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declare -i ref_major ref_minor ref_revision ref_change
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ref_version=$1
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tst_version=$2
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TXT=$3
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# This saves us the save/restore hassle of the system IFS value
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local IFS
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# if echo $ref_version | grep [[:alpha:]] 2>&1 >/dev/null ||
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# echo $tst_version | grep [[:alpha:]] 2>&1 >/dev/null ;then
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# echo "Cannot test for text, 0.0.0a, version types, assuming 'success' "
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# return
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# fi
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write_error_and_die() {
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echo -e "\n\t\t$TXT version -->${tst_version}<-- is too old.
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This script requires ${ref_version} or greater\n"
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exit 1
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}
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echo -ne "$TXT:\t${L_arrow}${BOLD}${tst_version}${OFF}${R_arrow}"
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IFS=".-(" # Split up w.x.y.z as well as w.x.y-rc (catch release candidates)
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set -- $ref_version # set postional parameters to minimum ver values
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ref_major=$1; ref_minor=$2; ref_revision=$3
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#
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set -- $tst_version # Set postional parameters to test version values
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major=$1; minor=$2; revision=$3
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#
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# Compare against minimum acceptable version..
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(( major > ref_major )) && echo " ..OK" && return
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(( major < ref_major )) && write_error_and_die
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# major=ref_major
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(( minor < ref_minor )) && write_error_and_die
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(( minor > ref_minor )) && echo " ..OK" && return
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# minor=ref_minor
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(( revision >= ref_revision )) && echo " ..OK" && return
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# oops.. write error msg and die
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write_error_and_die
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}
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