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zsh globbing and glob qualifier:
'**/*' = recursive
om = ouput by modification (last access)
[1,20] = twenty files.
The '-t' switch is provided to ls so that the files are ordered with the most recent at the top. For a more 'find' like output the following can be used.
print -rl **/*(om[1,20])
zsh: list of files sorted by size, greater than 100mb, head the top 5. '**/*' is recursive, and the glob qualifiers provide '.' = regular file, 'L' size, which is followed by 'm' = 'megabyte', and finally '+100' = a value of 100
Find top 5 big files
I find it useful, when cleaning up deleting unwanted files to make more space, to list in size order so I can delete the largest first.
Note that using "q" shows files with non-printing characters in name.
In this sample output (above), I found two copies of the same iso file both of which are immediate "delete candidates" for me.
Long listing alternative
I find it very handy to be able to quickly see the most recently modified/created files in a directory.
Note that the "q" option will reveal any files with non-printable characters in their filename.
list only directories in reverse order
On the Mac, the 'ls' function can sort based on month/day/time, but seems to lack ability to filter on the Year field (#9 among the long listed fields). The sorted list continuously increases the 'START' year for the most recently accessed set of files. The final month printed will be the highest month that appeared in that START year. The command does its magic on the current directory, and suitably discards all entries that are themselves directories. If you expect files dating prior to 2002, change the START year accordingly.
Executing pfiles will return a list of all descriptors utilized by the process
We are interested in the S_IFREG entries since they are pointing usually to files
In the line, there is the inode number of the file which we use in order to find the filename.
The only bad thing is that in order not to search from / you have to suspect where could possibly be the file.
Improvements more than welcome.
lsof was not available in my case
Lists everithing using -l "long listing format" wich includes the space used by the folder. Displays it in -h "human readable form" (i.e. 2.2G, 32K), and -R recurses subfolders.
grep -e using a regex, show lines containing the word "total" or a ":" at the end of the line (those with the name of the folder) only.
ls -1 shows one file per line (update: -1 was not really needed)
wc -l counts the lines received from the previous command
Substitute for #11720
Can probably be even shorter and easier.
Uses the formatting of a man page to show an outline of its headers and sub-headers.
This was tested on Ubuntu 12.04 (Precise) LTS Server. It returns the name of the symlink within /dev/disk/by-id for the physical drive you specify. Change /dev/sda to the one you want, and replace ata- with scsi- or the appropriate type for your drive.
I used this to pre-configure grub-pc during a non-interactive install because I had to tell it which disk to install grub on, and physical disks don't have a UUID such as that blkid provides.
works nice if you're only interested in files that are completed downloading from a torrent