This finds the 10 largest files in the /var directory. Modify as needed

#  du -a /var | sort -n -r | head -n 10

# ssh vmbulkmsgtst1 -- tar cz /admin/software/ | ssh bulkmsg1 -- tar vxzC /

Command for getting the list of files with perms, owners, groups info. Useful to find the checksum of 2 machines/images.

# find / | sort | xargs ls -ld | awk '{print $1,$3,$4,$9,$10,$11}'

If there's too many files in a dir to tar up normally

# find . -type f -exec tar -uf /disk3/mqueue.tar {} \;

Move files one by one; handy if there's too many files to do anything else with.

# for FILE in `ls /var/spool/mqueue/`; do mv /var/spool/mqueue/$FILE /var/spool/mqueue.TODAY ; done &

# for FILE in `ls /disk3/mqueue/`; do mv /disk3/mqueue/$FILE /disk3/mqueue.TODAY ; done &

Relocate a file or directory, but keep it accessible on the old location through a simlink.

# mv $1 $2 && ln -s $2/$(basename $1) $(dirname $1)

Diff files on two remote hosts.

# diff <(ssh mymeteor01 cat /etc/hosts) <(ssh mymeteor02 cat /etc/hosts)

:set ff=unix

And in case you want to migrate back to, err.. MS-DOS: “:set ff=dos” does the opposite.

# tr -d "\015" < myscript.sh > myscriptNEW.sh

# mv myscriptNEW.sh myscript.sh

# man dos2unix