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