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# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# non-interactive
# error
read -n -1
# from pipe -- should work, but doesn't change tty attributes
echo abcdefg | {
read -n 3 xyz
echo $xyz
cat - # make sure we don't read too much
}
# fewer chars than specified
echo ab | {
read -n 3 xyz
echo $xyz
}
echo abc | {
read -N 4 -d$'\n' foo
echo $foo
}
read -n 1 < $0
echo "$REPLY"
# succeed if fd is valid
read -n 0 var <<<'abc'
echo $?
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