| Both sides previous revisionPrevious revision | |
| ed_cheat_sheet [2023/07/01 00:19] – [ed Cheat Sheet] hc9 | ed_cheat_sheet [2023/07/01 00:20] (current) – [ed Cheat Sheet] hc9 |
|---|
| | ====== ed Cheat Sheet ====== |
| | ed: |
| | * ed is a small, powerful, line-oriented, command-line-interfaced text editor. All editors frustrate, but ed often amazes while others disappoint. |
| | * "If something goes wrong, ed is sometimes the only editor available. This is often the only time when it is used interactively." --from its [[wp>ed_(text_editor)| Wikipedia entry]] |
| | * [[http://www.gnu.org/fun/jokes/ed.msg.html|ed, man! !man ed]] — ed is the standard text editor. |
| | |
| | ''man ed'' for more information. |
| | |
| | Start ed from your shell command line: |
| | |
| | ''ed //file//'' |
| | |
| | Edit file by entering ed commands with the following syntax: |
| | |
| | ''[//range//][//command//]'' |
| | |
| | //range// specifies the line or block of consecutive lines (syntax: ''//from-line//,//to-line//'') to which //command// is applied. Default range is the current line except where noted below with a parenthesis preceding the command syntax. Lines are specified as follows: |
| | |
| | | //n// | line //n// | ''.'' | current | ''$'' | last | '''''//c// | mark //c// | |
| | | ''-''[//n//] | up //n// (default: 1) | ''+''[//n//] | down //n// (default: 1) | '','' | 1,$ | '';'' | .,$ | |
| | | ''?//re//?'' | previous regexp match |||| ''///re///'' | next regexp match ||| |
| | |
| | ===== Input commands ===== |
| | |
| | | ''a'' | Append after. | ''c'' | Change range. | ''i'' | Insert before. | ''.'' | End input mode. | |
| | |
| | ===== Edit commands ===== |
| | |
| | | ''d'' | Delete. | ''s///re/////s///[g|//n//][p]'' | Substitute. | |
| | | ''m[//line//]'' | Move after //line//. | ''t[//line//]'' | Copy after //line//. | |
| | | ''(.,+)j'' | Join lines. | ''u'' | Undo.| |
| | | ''(1,$)g///re/////cmds//'' | Perform //cmds// for all matching lines. | ''(1,$)v///re/////cmds//'' |Perform //cmds// for all non-matching lines. | |
| | |
| | ===== File commands ===== |
| | |
| | | ''e [//file//<sup>*</sup>]'' | Edit //file//. | ''E [//file//<sup>*</sup>]'' | Edit, discarding changes. | |
| | | ''($)r [//file//]'' | Read and append. | ''f [//file//]'' | Set/display file name. | |
| | | ''(1,$)w [//file//<sup>*</sup>]'' | Write. | ''(1,$)W [//file//<sup>*</sup>]'' | Append to //file//. | |
| | | ''(1,$)wq [//file//<sup>*</sup>]'' | Write and quit. | |
| | |
| | | <sup>*</sup> | In place of //file//, specify "! //shell-command//" to read/write text to //shell-command// standard output/input. | |
| | |
| | ===== Display commands ===== |
| | |
| | | ''p'' | List lines. | ''l'' | … with unprintables. | ''n'' | … with numbers. | |
| | | ''(+)z[//lines//]'' | Scroll. | ''(+)//null//'' | ''p'' | |
| | |
| | ===== Other commands ===== |
| | |
| | | ''k//c//'' | Mark line. | ''($)='' | Display line number. | ''h'' | Last error text. | |
| | | ''!//shell-command//'' | Execute //shell-command//. | ''q'' | Quit. | ''Q'' | Quit, discarding changes. | |
| | |
| | ---- |
| | [[http://sdf.org/?tutorials/ed|ed Cheat Sheet]] - traditional link (using [[wp>Revision_Control_System|RCS]]) |
| |
