This document provides a summary of common Unix, Linux, and Mac OS X commands organized into categories including filesystem commands, search commands, configuration files, less common commands, network commands, and examples of command mashups. Some key commands summarized are cd for changing directories, ls for listing files, cp for copying, mv for moving, rm for removing, and find, grep, locate, and mdfind for searching files and text. Configuration files mentioned include ~/.bashrc, ~/.bash_profile, and ~/.vimrc. Network commands included are ftp, ping, scp, and ssh. The document also provides examples of combining multiple commands through pipes and output redirection.

1. Unix, Linux, and Max OS X Commands
Common Filesystem Commands Search Commands Configuration Files
cd change directory find find files and directories ~/.bashrc bash run commands
cd foo find . ~/.bash_profile bash config file (linux)
cd ../.. find . –type f –name “*.java” ~/.profile bash config file (mac)
cp copy files and directories grep search for text in files ~/.vimrc vi/vim config file
cp /tmp/foo.txt . grep ‘foo’ *
cp f1 f2 f3 dir1 locate find files on the entire system Sample Aliases
gzip compress a file locate java alias l=“ls –alF”
gzip bigfile.tar mdfind (like locate; mac os x only) alias h=history
ls list files and directories alias cd..=“cd ..”
ls –alF Less-Common Commands alias html=“cd /usr/local/html”
ls -aCF cat concatenate files
mkdir make a directory chgrp change group owner Common Network Commands
mkdir dir1 dir2 dir3 chmod change file mode ftp file transfer protocol
mkdir –p a/b/c/d chown change file owner ping ping a remote system
more scroll through a file df show free disk space scp secure copy
more bigfile.txt diff differences between files ssh secure shell
ps show running processes du directory usage (du –s *)
ps auxwww head display the beginning of a file Command Mashups
mv move files and directories history show history of commands grep foo *txt | wc -l
mv f1 f2 f3 dir1 last show last user login times history | grep ssh
rm remove a file or directory ln link files and directories ls –al | more
rm oldfile lsof list of open files ls –al | grep Jul | grep –v 2006
rm –r olddir man man pages (help) ls –al | grep ’^d’
tar archive command sed streamline editor ps auxwww | grep –i java
tar czvf all.tgz * sort sort input ps aux | wc –l
tar xzvf all.tgz strings search for text in binary files who | wc -l
wc word count tail display the end of a file
wc –l file1 file2 who who is on the system devdaily.com/unix