Hp NonStop G-Series Instrukcja Użytkownika Pobierz pdf (Strona 174)

where n is the number of the line on which the substitution is to be made. In the following example,

the s subcommand moves to line number 1, replaces the string “stop” with the string “quit”, and

displays the new line:

1s/stop/quit/p

The only way to quit

The s subcommand changes only the first occurrence of the string on a given line. To learn how

to change all occurrences of a string on the line, see “Substituting Every Occurrence of a String”

(page 174).

Substituting on Multiple Lines

To make a substitution on multiple lines, use a subcommand of the following form:

n,ms/oldstring/newstring/

where n is the line number of the first line of the group and m is the line number of the last line.

In the following example, the s subcommand replaces the first occurrence of the string “to” with

the string “TO” on every line in the buffer:

1,$s/to/TO/

1,$p

The only way TO quit

adding text is TO type a

line that contains only

a period.

The 1,$p subcommand displays the contents of the buffer, which lets you verify that the substitutions

were made.

Substituting Every Occurrence of a String

Ordinarily, the s (substitute) subcommand changes only the first occurrence of a string on a given

line. However, the g (global) operator lets you change every occurrence of a string on a line or

in a group of lines.

To make a global substitution on a single line, use a subcommand of the following form:

ns/oldstring/newstring/g

In the following example, 3s/on/ON/gp changes each occurrence of the string “on” to “ON” in

line 3 and displays the new line:

3s/on/ON/gp

line that cONtains ONly

To make a global substitution on multiple lines, specify the group of lines with a subcommand of

the form:

n,ms/oldstring/newstring/g

In the following example, 1,$s/TO/to/gp changes the string “TO” into the string “to” in every

line in the buffer:

1,$s/TO/to/gp

The only way to quit

adding text is to type a

line that cONtains ONly

a period.

Removing Characters

You can use the s (substitute) subcommand to remove a string of characters (that is, to replace the

string with nothing). To remove characters, use a subcommand of the form s/oldstring// with

no space between the // (last two slashes).

In the following example, ed removes the string “adding” from line number 2 and then displays

the changed line:

2s/adding// p

text is to type a

174 The ed Editor

1 2 ... 169 170 171 172 173 174 175 176 177 178 179 ... 212 213

Komentarze do niniejszej Instrukcji

Brak uwag

Hp NonStop G-Series Instrukcja Użytkownika Strona 174

Komentarze do niniejszej Instrukcji

Powiązane produkty i podręczniki dla Sprzęt komputerowy Hp NonStop G-Series