- Proper way to read a file in
while read f; do
echo $f # or whatever it is you need to do with file
done < /tmp/file.txt
- Strip comments and blank lines from file
sed -e 's;#.*;;' -e '/^ *$/d' /tmp/file-with-comments
- Convert filenames to all lowercase
for file in *; do mv $file `echo $file | tr A-Z a-z` done
- Empty files in current directory
find . -name \* -exec rm "{}" \; -exec touch "{}" \;
- Find suid and sgid programs
find / -type f \(-perm -04000 -o -perm -02000 \)
echo `TZ=GMT+29 date +"%D"`
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