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Diffstat (limited to 'examples/scripts.v2/bashrand')
-rw-r--r-- | examples/scripts.v2/bashrand | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/examples/scripts.v2/bashrand b/examples/scripts.v2/bashrand deleted file mode 100644 index 54260c0..0000000 --- a/examples/scripts.v2/bashrand +++ /dev/null @@ -1,76 +0,0 @@ -#! /bin/bash -# bashrand - generate a random number in a specified range with an -# optionally specified ``seed'' value. -# -# Original Author: Peter Turnbull, May 1993 - -usage() -{ - echo "$PROG: usage: $PROG [-s seed] lower-limit upper-limit" >&2 -} - -PROG=${0##*/} - -SEED=$$ # Initialize random-number seed value with PID - -while getopts s: opt -do - case "$opt" in - s) SEED=$OPTARG ;; - *) usage ; exit 2 ;; - esac -done - -shift $((OPTIND - 1)) - -# Process command-line arguments: -case $# in - 2) Lower=$1; Upper=$2 ;; - *) usage ; exit 2 ;; -esac - -# Check that specified values are integers: -expr "$Lower" + 0 >/dev/null 2>&1 || { - echo "$PROG: lower ($Lower) not an integer" >&2 - exit 1 -} - -expr "$Upper" + 0 >/dev/null 2>&1 || { - echo "$PROG: upper ($Upper) not an integer" >&2 - exit 1 -} - -expr "$SEED" + 0 >/dev/null 2>&1 || { - echo "$PROG: seed ($SEED) not an integer" >&2 - exit 1 -} - -# Check that values are in the correct range: -(( $Lower < 0 )) || [ `expr "$Lower" : '.*'` -gt 5 ] && { - echo "$PROG: Lower limit ($Lower) out of range" >&2 - exit 1 -} - -(( $Upper > 32767 )) || [ `expr "$Upper" : '.*'` -gt 5 ] && { - echo "$PROG: Upper limit ($Upper) out of range" >&2; - exit 1 -} - -(( $SEED < 0 )) || (( $SEED > 32767 )) || [ `expr "$SEED" : '.*'` -gt 5 ] && { - echo "$PROG: Seed value ($SEED) out of range (0 to 32767)" >&2 - exit 1 -} - -(( $Upper <= $Lower )) && { - echo "$PROG: upper ($Upper) <= lower value ($Lower)" >&2 - exit 1 -} - -# Seed the random-number generator: -RANDOM=$SEED - -# Compute value, scaled within range: -let rand="$RANDOM % ($Upper - $Lower + 1) + $Lower" - -# Report result: -echo $rand |