如何删除目录中行数多于或少于指定的文件(所有文件都有“.txt”后缀)?
这个 bash 脚本应该可以解决问题。保存为“rmlc.sh”。
使用示例:
rmlc.sh -more 20 *.txt # Remove all .txt files with more than 20 lines
rmlc.sh -less 15 * # Remove ALL files with fewer than 15 lines
请注意,如果 rmlc.sh 脚本位于当前目录中,则它会受到保护,不会被删除。
#!/bin/sh
# rmlc.sh - Remove by line count
SCRIPTNAME="rmlc.sh"
IFS=""
# Parse arguments
if [ $# -lt 3 ]; then
echo "Usage:"
echo "$SCRIPTNAME [-more|-less] [numlines] file1 file2..."
exit
fi
if [ $1 == "-more" ]; then
COMPARE="-gt"
elif [ $1 == "-less" ]; then
COMPARE="-lt"
else
echo "First argument must be -more or -less"
exit
fi
LINECOUNT=$2
# Discard non-filename arguments
shift 2
for filename in $*; do
# Make sure we're dealing with a regular file first
if [ ! -f "$filename" ]; then
echo "Ignoring $filename"
continue
fi
# We probably don't want to delete ourselves if script is in current dir
if [ "$filename" == "$SCRIPTNAME" ]; then
continue
fi
# Feed wc with stdin so that output doesn't include filename
lines=`cat "$filename" | wc -l`
# Check criteria and delete
if [ $lines $COMPARE $LINECOUNT ]; then
echo "Deleting $filename"
rm "$filename"
fi
done
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