c

• cal - print calendar
• cancel - cancel line printer requests
• cat - concatenate and print files
• cd - change working directory
• chgrp - change file group ownership
• chmod - change file modes
• chown - change file ownership
• cksum - write file checksums and sizes
• cmp - compare two files
• command - execute a simple command
• comm - select or reject lines common to two files
• compress - compress files
• cp - copy files
• cpio - copy in and out
• crontab - schedule periodic background work
• csplit - split files based on context
• cut - cut out selected fields of each line of a file