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| Cornell High Energy Synchrotron Source | ||||
| Doc#: REF-COMP-002 | Reference: CHESS Basic Linux Guide | Prepared by:ZB | ||
| Rev.: 1 | Revision Date: 11/02/12 | Date Effective: | Date Expires: | Approved by: |
Basic Navigation and Controls
Command | Opt | Description | Example |
| Tab key | Autocomplete file or path name. | ||
| [↑] Arrow | Recall previous commands. | ||
| [Ctrl] + C | Kill current command. | ||
| pwd | Print working directory. | pwd | |
| cd path | Change directory to path. cd .. moves up one directory level. cd alone will go to home directory. |
cd /home/specuser/Macros cd .. cd | |
| ls | -l |
Lists contents of current directory. -l displays file details | ls |
| halt | Shut down computer. | halt | |
| reboot | Reboots computer. | reboot | |
| su username | Switch user. No username will attempt login as root. | su specadm | |
| sudo username | Allows username to perform an action as root if privileges are set. | sudo specadm rm file | |
| exit | Log out and return to previous user. | exit |
File Structure
Command | Opt | Description | Example* |
| */path/file | Run executable file. | /home/test/start.cmd | |
| ./file | Run executable file in current directory. | ./start.cmd | |
| mkdir/path/new_folder/ | Make a new directory new_folder, in location /path/ | mkdir /home/test/dir/ | |
| rmdir/path/folder_name/ | -r | Remove directory folder_name, in location path. | rmdir /home/test/dir/ |
| cp /path/file /path2/copied_file | Copy file in directory /path/ to /path2/ as new file file2 | cp /test/file1 /test/file2 | |
| mv/path/file /path2/file | Move file in directory /path/ to directory /path2/. (like Cut & Paste) | mv /test/file /test2/file | |
| rm/path/file | -r | Remove file (delete). | rm /test/file |
| chmod /path/file | -R | Change file/folder read/write permissions. Example gives full permissions within /test/ to all users | chmod ÂR 777 /home/specuser/test/ |
Information
Command | Opt | Description | Example* |
| *ps | -ax | List all processes | ps Âax |
| killall process_name | -9 | Kill process_name. -9 extra-kills process. | killall st.cmd |
| man command_name | Displays manual for command. Âq to quit. | man spec | |
| help command_name | Displays help file for command. | help ifconfig | |
| less file | View file content. Âq quits. | less st.cmd | |
| ifconfig | Display Network Configuration. | ifconfig | |
| gedit file | Opens file in Gedit text editor. NOTE: Not always available | gedit st.cmd | |
| vi file | Opens file in vi, an in-terminal text editor. NOTE: Appendix for details on vi commands and usage. | vi st.cmd |
Remote Services
Command | Opt | Description | Example* |
| *sshusername@hostname | Open a remote connection to hostname | ssh specuser@ops1 | |
| sftp username@hostname | Open secure file transfer connection to hostname | sftp specuser@ops1 | |
| put /path/file /remotepath/remotefile | sftp command - transfers file from local computer to remote in /path/ | put /home/specuser/file /home/opsuser/file | |
| get /remotepath/remotefile/ /localpath/localfile | sftp command - to transfer file from remote computer to local in /path/ | get /home/opsuser/file /home/specuser/file | |
| telnet ip_address port | Open serial connection to IP and port. | telnet 192.168.182.93 4001 | |
| [Ctrl] + ] | Close telnet connection | ||
| exit | Close ssh, sftp, telnet | exit |
Printer Commands
Command | Opt | Description | Example* |
| lpr /path/file | Print file. | lpr /home/test/st.cmd | |
| *lpq | Display print queue. | lpq | |
| lprm job_number | Removes job_number from print queue. No job number removes current job. | lprm 99 | |
| /sbin/service cups restart | Stops/restarts printing service. NOTE: requires root access. | /sbin/service cups restart |
Appendix I Â vi Commands
Command | Opt | Description | Example* |
| *vi/path/file | Open file in vi. | vi /Macros/userlist.mac | |
| Arrow Keys | Move cursor. | ||
| i | Insert text before cursor. | ||
| a | Append text after cursor. | ||
| [ESC] Key | Exit ÂEdit mode. | ||
| u | Undo/redo last command (not in Edit mode). | ||
| :w | Write out changes (save). | ||
| :q | Quit vi. | ||
| :wq | Save and quit vi. | ||
| :q! | Quit without saving. |
Rev. 1 Â Initial document (11/02/12 - ZB) -- LeeShelp - 24 Apr 2017
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Topic revision: r1 - 24 Apr 2017, ljs30
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