36 lines
805 B
Bash
36 lines
805 B
Bash
|
#!/bin/sh
|
||
|
|
|
||
|
|
candidate="$1"
|
||
|
|
|
||
|
|
tar=`which $candidate`
|
||
|
|
if [ ! -x "$tar" ]; then
|
||
|
|
tar=`which tar`
|
||
|
|
if [ ! -x "$tar" ]; then
|
||
|
|
# echo nothing: no suitable tar found
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Output of 'tar --version' examples:
|
||
|
|
# tar (GNU tar) 1.15.1
|
||
|
|
# tar (GNU tar) 1.25
|
||
|
|
version=`$tar --version | head -n 1 | sed 's/^.*\s\([0-9]\+\.\S\+\).*$/\1/'`
|
||
|
|
major=`echo "$version" | cut -d. -f1`
|
||
|
|
minor=`echo "$version" | cut -d. -f2`
|
||
|
|
bugfix=`echo "$version" | cut -d. -f3`
|
||
|
|
|
||
|
|
# Minimal version = 1.17 (previous versions do not correctly unpack archives
|
||
|
|
# containing hard-links if the --strip-components option is used).
|
||
|
|
major_min=1
|
||
|
|
minor_min=17
|
||
|
|
if [ $major -gt $major_min ]; then
|
||
|
|
echo $tar
|
||
|
|
else
|
||
|
|
if [ $major -eq $major_min -a $minor -ge $minor_min ]; then
|
||
|
|
echo $tar
|
||
|
|
else
|
||
|
|
# echo nothing: no suitable tar found
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
fi
|