![]() ![]() Number, and it is not changed back after the command-list ended. The command-list can change the current line The current address is set toĮach marked line in turn, and then the command-list (1,$) g / re / command-list Mark each addressed line matching the regular expression Ifįile is not specified, then the default unescapedįilename is printed. f file Sets the default filename to file. The current address is set to the last line ![]() This is similar to theĮ command, except that unwritten changes areĭiscarded without warning. Any lines in the buffer are deleted before the e ! command Edits the standard output ofįilename is unchanged. TheĬurrent address is set to the last line read. Any lines in the buffer are deleted before the new file is read. Ifįile is not specified, then the default filename is e file Edits file, and sets the default filename. Otherwise theĬurrent address is set to the line before the deleted range. If there is a line after theĭeleted range, then the current address is set to this line. (.) d Deletes the addressed lines from the buffer. The current address is set to last line entered. The addressed lines are deleted from theīuffer, and text is appended in their place. (.) a Appends text to the buffer after the addressed line. Supplied if none is specified (in parentheses), and other possible arguments TheĬommands are shown together with the default address or address range ![]() (enumerate), to print the last line affected by the command.Įd recognizes the following commands. However, mostĬommands accept a print suffix, which is any of p In general, at most one command is allowed per line. Over several lines, then each line except for the last must be terminated Though some require additional parameters. ' lc The line previously marked by a k (mark) command, The second question markĬan be omitted if it ends a line. The search wraps to the end of the buffer andĬontinues up to the current line, if necessary. ? re? The previous line containing the regular expression The second slash can be omitted if it ends a The search wraps to the beginning of the buffer and continues down to theĬurrent line, if necessary. re/ The next line containing the regular expression re. The current through last lines in the buffer. This is equivalent to theĪddress range 1,$. , or % The first through last lines in the buffer. + n The nth next line, where n isĪ non-negative number. The current line (address) in the buffer. The following address symbols are recognized. Used to set the current address, and the second address is interpreted In a semi-colon-delimited range, the first address is If only oneĪddress is expected, then the last address is used.Įach address in a comma-delimited range is interpreted relative to N > 2, then the corresponding range is determinedīy the last two addresses in the n-tuple. Second address is set to the given address. If only one address is given in a range, then the The value of the first address in a range cannot exceed the This means “before theįirst line”, and is legal wherever it makes sense.Īn address range is two addresses separated either by a comma or One exception to the rule that addresses represent line numbers is Read from left to right, and their values are computed relative to the Is set to the last line affected by a command.Ī line address is constructed from one of the bases in the listīelow, optionally followed by a numeric offset. When a file is first read, the currentĪddress is set to the last line of the file. LINEĪn address represents the number of a line in the buffer.Īddress which is typically supplied to commands as the defaultĪddress when none is specified. To file only if it is not prefixed with a bang. In this case, what is read is theįile whose name begins with a bang, prefix the name with a backslash file Specifies the name of a file to read. The options are as follows: - Same as the -s option (deprecated). Re_format(7) for more information on regular expressions. Support basic regular expressions (BREs). If fewer addresses are given than the command accepts, then The address(es) indicate the line or range of lines to be affectedīy the command. ![]()
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