at
Executes commands at a specified time page 593
cal
Displays a calendar page 598
crontab
Maintains crontab files page 624
echo
Displays a message page 647
expr
Evaluates an expression page 649
fsck
Checks and repairs a filesystem page 666
mkfs
Creates a filesystem on a device page 725
Mtools
Uses DOS-style commands on files and directories page 728
tee
Copies standard input to standard output and one or more files page 791
test
Evaluates an expression page 794
TR
Replaces specified characters page 804
tty
Displays the terminal pathname page 807
tune2fs
Changes parameters on an ext2 or ext3 filesystem page 808
xargs
Converts standard input into command lines page 821
