シェルスクリプトでハマった件→【募】ステキな回避方法 http://d.hatena.ne.jp/hirose31/20130814/1376487935

README.md

OK

こんな感じに、

• trivial warning が出力されない
• 全部 ok

になればOKです。

$ ./test.sh source_me-ok1.sh
PID=22954
source=source_me-ok1.sh
--
PID=22956
critical error
ok 1 - ORENO_HOME
ok 2 - PATH
ok 3 - LOADED_ORENO

NG

trivial warning が出力されてるのでダメ。

/test.sh source_me.sh
PID=23102
source=source_me.sh
--
PID=23104
trivial warning
critical error
ok 1 - ORENO_HOME
ok 2 - PATH
ok 3 - LOADED_ORENO

not okがあるのでダメ。

$ ./test.sh source_me-ng1.sh
PID=23195
source=source_me-ng1.sh
--
PID=23197
critical error
not ok 1 - ORENO_HOME
not ok 2 - PATH
not ok 3 - LOADED_ORENO

$ ./test.sh source_me-ng2.sh
PID=23272
source=source_me-ng2.sh
--
PID=23274
critical error
not ok 1 - ORENO_HOME
not ok 2 - PATH
ok 3 - LOADED_ORENO

orenorc

# -*- mode: sh; -*-
# このファイルはいじれないこととします

ORENO_HOME="/oreno"; export ORENO_HOME
PATH=$PATH:$ORENO_HOME/bin

# 無視してもいい警告
echo "trivial warning" >&2

# やばいエラー！
echo "critical error"  >&2

echo_pid o 2>/dev/null

source_me-ng1.sh

# -*- mode: sh; -*-

echo_pid() { echo "$@ $$ $BASHPID $BASH_SUBSHELL"; }

echo_pid 1
case $PATH in
  */oreno/bin*)
    : # do nothing
    ;;
  *)
    echo_pid 2
    . orenorc
    echo_pid 3
    LOADED_ORENO=1; export LOADED_ORENO
    ;;
esac 2>&1 | grep -v trivial
echo_pid 4

source_me-ng2.sh

# -*- mode: sh; -*-

echo_pid() { echo "$@ $$ $BASHPID $BASH_SUBSHELL"; }

echo_pid 1
case $PATH in
  */oreno/bin*)
    : # do nothing
    ;;
  *)
    echo_pid 2
    . orenorc  2>&1 | grep -v trivial
    echo_pid 3
    LOADED_ORENO=1; export LOADED_ORENO
    ;;
esac
echo_pid 4

source_me-ok-hirose31.sh

# -*- mode: sh; -*-

tmpf=$(mktemp)
exec 3>&2 2>$tmpf
case $PATH in
  */oreno/bin*)
    : # do nothing
    ;;
  *)
    . orenorc
    LOADED_ORENO=1; export LOADED_ORENO
    ;;
esac
exec 2>&3 3>&-
cat $tmpf | grep -v trivial
rm -f $tmpf
echo FINISH
echo DONE >&2

source_me-ok-m2ym.sh

# -*- mode: sh; -*-

fifo=$(mktemp -u)
mkfifo $fifo
grep -v trivial <$fifo &
exec 3>&2 2>$fifo
rm -f $fifo
case $PATH in
  */oreno/bin*)
    : # do nothing
    ;;
  *)
    . orenorc
    LOADED_ORENO=1; export LOADED_ORENO
    ;;
esac
exec 2>&3 3>&-
echo FINISH
echo DONE >&2

source_me-ok-satoh_fumiyasu.sh

# -*- mode: sh; -*-

case $PATH in
  */oreno/bin*)
    : # do nothing
    ;;
  *)
    . orenorc 2> >(grep -v trivial >&2)
    LOADED_ORENO=1; export LOADED_ORENO
    ;;
esac
echo FINISH
echo DONE >&2

source_me-ok-sechiro.sh

# -*- mode: sh; -*-

exec 2> >(grep -v trivial >&2)
case $PATH in
  */oreno/bin*)
    : # do nothing
    ;;
  *)
    . orenorc
    LOADED_ORENO=1; export LOADED_ORENO
    ;;
esac
echo FINISH
echo DONE >&2

source_me.sh

# -*- mode: sh; -*-

case $PATH in
  */oreno/bin*)
    : # do nothing
    ;;
  *)
    . orenorc
    LOADED_ORENO=1; export LOADED_ORENO
    ;;
esac
echo FINISH
echo DONE >&2

test.sh

#!/bin/sh
source_me=${1:-source_me.sh}
echo "PID=$$"
echo "source=$source_me"
echo "-- "
{
  cat <<'EOT'
  echo "PID=$$"
  PATH=/bin:/usr/bin
EOT
  echo ". $source_me"
  cat <<'EOF'
  [ "$ORENO_HOME" != "/oreno" ] && echo -n "not "
  echo "ok 1 - ORENO_HOME"

  case $PATH in
    */oreno/bin*):;;
    *)echo -n "not ";;
  esac
  echo "ok 2 - PATH"

  [ "$LOADED_ORENO" != "1" ] && echo -n "not "
  echo "ok 3 - LOADED_ORENO"
EOF
} | bash