Unix Tips

New to Unix ?

• Posix Shell (sh)
• Bourne Shell (sh / bsh)
• Bourne Again Shell (bash)(manpage)
• C-Shell (csh)
• TC-Shell (tcsh)(manpage)
• Korn Shell (ksh)
• Public Domain Korn Shell (pdksh / ksh)(manpage)
• A Shell (ash)
• Z Shell (zsh)

Unix Processes

• cd
• ls [-ladrt]
• more
• less [-is]
• head [-n]
• tail [-fn]
• mkdir
• rmdir
• mv
• cp
• rm
• ln [-s]
• df [-k] (on AIX might also want to use -P)
• du [-ks]
• dd
• od [-x]
• vi
• ed
• sed
• awk
• tr ("echo aBcDe | tr '[:upper:]' '[:lower:]'" results in abcde)
• passwd
• chsh
• chfn
• tar
• cpio
• find
• rlogin
• rsh
• rcp
• ssh
• scp
• sftp
• telnet
• ftp
• mail
• crontab [-le]

• mount
• umount
• top (on AIX -- topas -P)
• vmstat
• sar
• free (? available only on linux ?)

• tcpdump (tcpdump is a basic sniffer)(manpage)
• Ethereal (Sniffer with GUI)