pwd Shows the full path of the current directory ls Lists all the files in the current directory ls -al Lists all files and information ls –alR Lists all files and information in all subdirectories ls -alR | more Same as ls –alR, pausing when screen becomes full ls -alR > filename.txt Same as ls –alR, outputs the results to a file ls *.html Lists all files ending with .html cd [directory name] Changes to a new directory cd .. Changes to directory above current one clear Clears the screen vdir Gives a more detailed listing than the "ls" command exit Log off your shell Moving, Copying and Deleting Files
mv [old filename] [new filename] Move/rename a file cp [filename] [new filename] Copies a file rm [filename] Deletes a file rm * Deletes all files in current directory rm *.html Deletes all files ending in .html Creating, Moving, Copying and Deleting Directories
mkdir [directory name] Creates a new directory ls -d */ Lists all directories within current directory cp -r [directory] [new directory] Copies a directory and all files/directories in it Searching Files and Directories
find . -name [filename] -print Searches for a file starting with current directory grep [text] [filename] Searches for text within a file File and Directory Permissions
There are three levels of file permissions: read, write and execute. In addition, there are three groups to which you can assign permissions: file owner, user group and everyone. The command chmod followed by three numbers is used to change permissions. The first number is the permission for the owner, the second for the group and the third for everyone. Here are how the levels of permission translate:
0 = --- No permission 1 = --X Execute only 2 = -W- Write only 3 = -WX Write and execute 4 = R-- Read only 5 = R-X Read and execute 6 = RW- Read and write 7 = RWX Read, write and execute It is preferred that the group always have permission of 0. This prevents other users on the server from browsing files via Telnet and FTP. Here are the most common file permissions used:
chmod 604 [filename] Minimum permissions for HTML file chmod 705 [directory name] Minimum permissions for directories chmod 755 [filename] Minimum permissions for scripts & programs chmod 606 [filename] Permissions for data files used by scripts chmod 703 [directory name] Write-only permissions for public FTP uploading How do I unzip a file with telnet?
All of the below commands assume that you are within the same directory that the compressed file is in. To be sure type:
ls {enter}
If the file is there, you're ready to go. If not type:
cd /big/dom/xdomain/www/directory/ {enter}
replacing the path with the correct path to your file.If a file ends in .zip (for example, file.zip) type:
unzip file.zipIf a file ends in .tar (e.g., file.tar) type:
tar -xvf file.tarIf a file ends in .gz (for example, file.gz) type:
gzip -d file.gzIf a file ends in .tar.gz (e.g. file.tar.gz) type:
gzip -d file.tar.gz
and then
tar -xvf file.tarIf a file ends in .tgz (e.g. file.tgz)
zip [options] [zipfile] [files] The zip command compresses a file or list of files into a zip format archive file. This command is compatible with pkzip on a PC. Simply type "zip zipfile file1 file2 file3" at a telnet command prompt and replace zipfile with the name you want to use for your compressed zip archive file, and replace fileX with the name of the file(s) you want to compress into the zip archive.
For example, type "zip backup.zip home.html index.html" at a telnet command prompt to compress and archive the files called home.html and index.html into the file called backup.zip.
unzip [options] [zipfile] The unzip command extracts a zip format archive file. This command is compatible with pkunzip files from a PC. Simply type "unzip zipfile" at a telnet command prompt and replace zipfile with the name of your zip format archive file.
For example, type "unzip -aL old.zip" at a telnet command prompt to extract files contained in the archive called old.zip. The "-aL" are options that are generally useful when unzipping files created on a PC.
Common SSH Commands - Linux Shell Commands
Navigating in UNIX