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|
#! /bin/sh
#
# usage:
# export PATH="//services/lib:$PATH"
# cd services
# ls | filter owner == $LOGNAME | filter hasnt mail
#
set -euf
main() {
case $# in
2) op1 "$@";;
3) op2 "$@";;
*) echo 'You are made of stupid!' >&2; exit 23;;
esac
}
# op1 OP SCHEMA
op1() {
case "$1" in
has)
xargs grep -H "^$2:" \
| cut -d: -f1
;;
hasnt)
a=$(mktemp)
b=$(mktemp)
trap "rm $a $b; trap - EXIT INT QUIT" EXIT INT QUIT
cat > $a
cat $a | xargs grep -H "^$2:" | cut -d: -f1 > $b
diff -u $b $a | sed -n '/^++/d;s/^+\(.*\)/\1/p' | grep .
esac
}
# op2 SCHEMA OP RHS
op2() {
case "$2" in
==)
xargs grep -H "^$1:$3$" \
| cut -d: -f1
;;
!=)
xargs grep -H "^$1:" \
| grep -v ":$1:$3" \
| cut -d: -f1
;;
~=)
xargs grep -H "^$1:.*$3.*$" \
| cut -d: -f1
;;
esac
}
main "$@"
|
