If you find a large directory, and most of the files are new, that
directory may not be suitable for removal, as it is still being used.
Here is a script that lists a summary of file sizes, broken down into
the time of last modification.
You may remember that ls -l will list the month, day, hour, and minute
if the file is less than six months old, and show the month, day, and
year if the file is more than six months old. Using this, the script
creates a summary for each of the last six months, and each year for
files older than that:
${*:-.} xargs
|
#!/bin/sh
# usage: age_files [directory ...]
# lists size of files by age
#
# pick which version of ls you use
# System V
#LS="ls -ls"
# Berkeley
LS="ls -lsg"
#
find ${*:-.} -type f -print | xargs $LS | awk '
# argument 7 is the month; argument 9 is either hh:mm or yyyy
# test if argument is hh:mm or yyyy format
{
if ($9 !~ /:/) {
sz[$9]+=$1;
} else {
sz[$7]+=$1;
}
}
END {
for (i in sz) printf("%d\t%s\n", sz[i], i);
}' | sort -nr |
|---|
The program might generate results like this:
5715 1991
3434 1992
2929 1989
1738 Dec
1495 1990
1227 Jan
1119 Nov
953 Oct
61 Aug
40 Sep
