This file is indexed.

/usr/share/sagemath/bin/sage-update-src is in sagemath-common 8.1-7ubuntu1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
#!/usr/bin/env bash

# Do this before "set -e", as sage-env might give (harmless) errors.
source local/bin/sage-env

set -e

# People often move the Sage install right before doing the upgrade, so it's
# important to fix any path hardcoding issues first, or certain library
# links will fail.
sage-location

usage () {
    CMD="${0##*/}"
    echo "usage: $CMD [version]"
}

if [ "$#" -gt 1 ]; then
    usage
    exit 1
fi

if [ "$#" -gt 0 ]; then
    BRANCH="$1"
    shift
    echo "Upgrading to $BRANCH"
else
    BRANCH="master"
    echo "Upgrading to the latest development version"
fi

git fetch origin "$BRANCH"
git merge --ff-only FETCH_HEAD