#11021: Fix "sage -info" and a bug when sourcing sage-env more than once
--------------------------------------------------------+-------------------
Reporter: jhpalmieri | Owner: leif
Type: defect | Status:
needs_review
Priority: major | Milestone:
sage-4.7.1
Component: packages | Keywords:
SPKG.txt SAGE.txt -info BUILD sage-env sage-sage sage-spkg
Work_issues: | Upstream: N/A
Reviewer: Kelvin Li, Leif Leonhardy, John Palmieri | Author: Leif
Leonhardy, Kelvin Li
Merged: | Dependencies:
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Comment(by leif):
I wonder if there's a better (and more efficient) way to test if an spkg
is (bzip2-) compressed, preferably in a shell function.
I suspect something like
{{{
#!sh
if file "$spkg" | grep "bzip2" >/dev/null; then
# it is compressed
...
}}}
wouldn't be very portable, since `file` might not recognize bzip2 files on
some systems.
We could also directly check the magic header instead, with e.g. `head`
and `cut` or `dd`.
Any further suggestions?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11021#comment:49>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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