52 lines
999 B
Bash
Executable File
52 lines
999 B
Bash
Executable File
#!/bin/bash
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_help() {
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echo '
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Usage: file-age {file} [units]
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Checks file modification date, and the current time. Prints the age of
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the file in [units].
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[units] is one of S,M,H,d,w,m,y
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seconds is the default. All values floored.
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month = 30 days
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year = 365 days
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'
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exit
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}
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for (( i=1; i<=$#; i++ ))
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do [[ "${!i}" = "-h" ]] && _help
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done
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STATFILE="$1"
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[[ -z "$STATFILE" ]] && _help
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test -e "$STATFILE" || { echo File "$STATFILE" does not exist >&2; exit 1; }
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UNITS=${2:-S}
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case $OSTYPE in
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darwin*) created=$( stat -f %c -t %s "$STATFILE" ) ;;
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linux*) created=$( stat -c %Y "$STATFILE" ) ;;
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esac
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now=$( date +%s )
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age=$(( $now - $created ))
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case $UNITS in
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S)
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echo $age;;
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M)
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echo $(( $age / 60 ));;
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H)
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echo $(( $age / 3600 ));;
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d)
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echo $(( $age / 86400 ));;
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w)
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echo $(( $age / 604800 ));;
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m)
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echo $(( $age / 2592000 ));;
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y)
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echo $(( $age / 31536000 ));;
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*)
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echo Unit $UNITS not recognized.
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_help;;
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esac
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