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Sed Command Summary Modifications to: Command Address or Range Input Stream Output Stream Pattern Space Hold Buffer = ? ? ? ? ? a 1 ? ? ? ? b 2 ? ? ? ? c 2 ? ? ? ? d 2 ? ? ? ? D 2 ? ? ? ? g 2 ? ? ? ? G 2 ? ? ? ? h 2 ? ? ? ? H 2 ? ? ? ? i 1 ? ? ? ? l 1 ? ? ? ? n 2 ? ? ? ? N 2 ? ? ? ? p 2 ? ? ? ? P 2 ? ? ? ? q 1 ? ? ? ? r 1 ? ? ? ? s 2 ? ? ? ? t 2 ? ? ? ? w 2 ? ? ? ? x 2 ? ? ? ? y 2 ? ? ? ? 1 Command takes single address or pattern. 2 Command takes pair of addresses. ?? Command does not modify the buffer. ? Command modifies the buffer. ? The “n” command may or may not generate output depending on the “-n” command option. Command line argument summary: Argument Description -n--quiet--silent suppress automatic printing of pattern space -e script--expression=script add the script to the commands to be executed -f script-file--file=script-file add the contents of script-file to the commands to be executed -i[suffix]--in-place[=suffix] edit files in place (makes backup if extension supplied) -l N--line-length=N specify the desired line-wrap length for the `l command -r--regexp-extended use extended regular expressions in the script. -s--separate consider files as separate rather than as a single continuous long stream. -u--unbuffered load minimal amounts of data from the input files and flush the output buffers more often --help display this help and exit -V--version output version information and exit  Command Description # Adds a comment = The = command prints the current line number to standard output. a \text The a command appends text after the range or pattern. b label The b command branches to the label. You can specify a label with a text string followed by a colon. If no label is there, branch to the end of the script. c \text The c command changes the current line with text d The d command deletes the current pattern space, reads in the next line, puts the new line into the pattern space, and aborts the current command, and starts execution at the f