tests/read.tests

   1 echo " a " | (read x; echo "$x.")
   2
   3 echo " a  b  " | ( read x y ; echo -"$x"-"$y"- )
   4 echo " a  b\ " | ( read x y ; echo -"$x"-"$y"- )
   5 echo " a  b  " | ( read x ; echo -"$x"- )
   6 echo " a  b\ " | ( read x ; echo -"$x"- )
   7
   8 echo " a  b\ " | ( read -r x y ; echo -"$x"-"$y"- )
   9 echo " a  b\ " | ( read -r x ; echo -"$x"- )
  10
  11 echo "\ a  b\ " | ( read -r x y ; echo -"$x"-"$y"- )
  12 echo "\ a  b\ " | ( read -r x ; echo -"$x"- )
  13 echo " \ a  b\ " | ( read -r x y ; echo -"$x"-"$y"- )
  14 echo " \ a  b\ " | ( read -r x ; echo -"$x"- )
  15
  16 echo "A B " > /tmp/IN
  17 unset x y z
  18 read x y z < /tmp/IN
  19 echo 1: "x[$x] y[$y] z[$z]"
  20 echo 1a: ${z-z not set}
  21 read x < /tmp/IN
  22 echo 2: "x[$x]"
  23 rm /tmp/IN
  24
  25 # this is where the bash `read' behavior with respect to $REPLY differs
  26 # from ksh93
  27 echo "A B " > /tmp/IN
  28
  29 read < /tmp/IN
  30 echo "[$REPLY]"
  31
  32 rm /tmp/IN
  33
  34 echo " A B " > /tmp/IN
  35
  36 read < /tmp/IN
  37 echo "[$REPLY]"
  38
  39 rm /tmp/IN
  40
  41 # make sure that read with more variables than words sets the extra
  42 # variables to the empty string
  43
  44 bvar=bvar
  45 cvar=cvar
  46 echo aa > /tmp/IN
  47 read avar bvar cvar < /tmp/IN
  48 echo =="$avar"==
  49 echo =="$bvar"==
  50 echo =="$cvar"==
  51
  52 rm /tmp/IN
  53
  54 # test behavior of read with various settings of IFS
  55
  56 echo " foo" | { IFS= read line; recho "$line"; }
  57
  58 echo " foo" | { IFS= ; read line; recho "$line"; }
  59
  60 echo " foo" | { unset IFS ; read line; recho "$line"; }
  61
  62 echo " foo" | { IFS=$'\n' ; read line; recho "$line"; }
  63
  64 echo " foo" | { IFS=$' \n' ; read line; recho "$line"; }
  65
  66 echo " foo" | { IFS=$' \t\n' ; read line; recho "$line"; }
  67
  68 echo " foo" | { IFS=$':' ; read line; recho "$line"; }
  69