Index

date command, 66, 69, 90, 139, 220

date formats, normalizing, 15–18

date format string, 141

date, system, 139–41

debugging shell scripts, 38–41

define script, 178–80

defining words, 178–80

.deleted-files directory, 47, 49

deleteuser script, 124, 129–31

deleting user accounts, 129–31

/dev/null directory, 233–34

/dev/null shells, 302

df command, 117

df output, improving readability of, 118–20

dictionary, adding, 80–82

diff command, 311

DIR script, 61–63

directories

Directory block, 293

disk quota exceeded error message, 116

diskhogs script, 115–17

disks

diskspace script, 117–18

ditto command, 305

docron, 154

docron script, 152–54

downloading files, 169–72

du command, 113