| /autoaway [min] | set auto-away timer to 'min' minutes |
| /alias [alias] [text] | create an alias to specified text |
| /away [msg] /aw [msg] | go away with custom auto-away message |
| /back | come back from away status |
| /business-card [user] | send your contact information to 'user' |
| /clear /clr /cls /cl | clear chat text window |
| /conf-invite [user] | invite user to private conference |
| /conf-start | start a private conference |
| /connect | open login window |
| /date /time | show current date and time |
| /disconnect | disconnect from chat |
| /emote [text] /me [text] /e [text] : [text] | send text as an emote |
| /file [file_name] [user] | send file named 'file_name' to 'user'; the file name must not contain a space and the file size must be under 250kb. |
| /find [text] | search in chat window for text |
| /flooder-remove [user] | remove user from list of flooders/booters |
| /follow [user] | follow user |
| /follow | stop following |
| /friends /buddies | show your buddy list |
| /friend [user] /buddy [user] | add/remove user to buddy/friend list |
| /goto [user] | join 'user' in whatever chat room they are currently in |
| /help | short command help screen |
| /history | display command history |
| /ignore [user] | ignore/un-ignore user |
| /image [file_name] | display (preview) the image 'file_name' in the 'Chat' window; 'file_name' is the name of an image on the local hard-drive and should not contain spaces; the image is scaled to fit the screen if necessary and only visible to you |
| /invite [user] /call [user] /inv [user] | invite the user to the current room |
| /join [room] | join the room |
| /last | list last 10 users to leave room |
| /last_comments | list last comment/action for each user |
| /leave | leave the current room or conference (go to nowhere) |
| show a preview of your Yahoo Mail messages (Inbox) | |
| /mute [user] | mute/un-mute user for this session |
| /online | print time online |
| /profile [user] | show user's profile |
| /quit /exit /logout /logoff | logout and quit GyachI |
| /reconnect | disconnect then auto-reconnect |
| /regex [regex] | add/remove regex to auto-ignore list |
| /regex_test "text" [regex] | test the specified text (quotes required) against given regex |
| /rejoin | leave the current room and come right back in (cannot be a conference) |
| /reload | reload ignore and alias lists |
| /revoke [user] | revoke another user's right to have you on their buddy list - take your name off their list |
| /tell [user] [text] /pm [user] [text] | send PM to user |
| /temp-friend-add [user] | add user to your temporary buddy list |
| /temp-friend-remove [user] | remove user from your temporary buddy list |
| /think [text] /t [text] | . o O( think text ) |
| /unalias [alias] | delete alias |
| /unignore [user] | un-ignore user |
| /unmute [user] | un-mute user |
| /url [url] | paste url as a clickable link |
| /ver /adv /v | paste GyachE Improved version and url |
| /viewcam [user] | view a user's webcam (Requires GyachI-Webcam) |
| ! [command] /exec [command] | execute command and post results to the current chat room or conference |
| !! [command] /execlocal [command] | execute command and display results locally |
| s: [term] | search the web for 'term' and show the results on the 'My Yahoo!' tab |