what is used to represent a "tab" character in "sed" - 未名空间MITBBS历史存档

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what is used to represent a "tab" character in "sed"

what is used to represent a "tab" character in "sed"# Programming - 葵花宝典

e*r2007-11-14 08:11

1 楼

I tried "\t" to represent a tab, but it doesn't work. thanks
bash-2.02$ less withtab.txt
fsfsdfsd = dlkgjdl
djf = dfd
bash-2.02$ sed 's/\t/ /g' withtab.txt
fsfsdfsd = dlkgjdl
djf = dfd

O*e2007-11-14 08:11

2 楼

Ctrl-I

【在 e******r 的大作中提到】

: I tried "\t" to represent a tab, but it doesn't work. thanks
: bash-2.02$ less withtab.txt
: fsfsdfsd = dlkgjdl
: djf = dfd
: bash-2.02$ sed 's/\t/ /g' withtab.txt
: fsfsdfsd = dlkgjdl
: djf = dfd

e*r2007-11-14 08:11

3 楼

what is that? ctrl followed by a char "l" as in "leg"?

【在 O******e 的大作中提到】

: Ctrl-I

o*o2007-11-14 08:11

4 楼

are u sure you have tab in your file?

【在 e******r 的大作中提到】

: I tried "\t" to represent a tab, but it doesn't work. thanks
: bash-2.02$ less withtab.txt
: fsfsdfsd = dlkgjdl
: djf = dfd
: bash-2.02$ sed 's/\t/ /g' withtab.txt
: fsfsdfsd = dlkgjdl
: djf = dfd

e*r2007-11-14 08:11

5 楼

yes, I artificially put some tabs in file for testing this.

【在 o*o 的大作中提到】

: are u sure you have tab in your file?

o*o2007-11-14 08:11

6 楼

so, it's RP problem.

【在 e******r 的大作中提到】

: yes, I artificially put some tabs in file for testing this.

e*w2007-11-14 08:11

7 楼

you need to escape \ with \\ ba.

【在 e******r 的大作中提到】

: I tried "\t" to represent a tab, but it doesn't work. thanks
: bash-2.02$ less withtab.txt
: fsfsdfsd = dlkgjdl
: djf = dfd
: bash-2.02$ sed 's/\t/ /g' withtab.txt
: fsfsdfsd = dlkgjdl
: djf = dfd

O*e2007-11-14 08:11

8 楼

Control-EYE.

【在 e******r 的大作中提到】

: yes, I artificially put some tabs in file for testing this.

O*e2007-11-14 08:11

9 楼

$ cat -T test.dat
abc^Ixyz
$ sed -e 's/\t/TAB/' test.dat
abcTABxyz
$ sed -e 's/\\t/TAB/' test.dat
abc xyz
$ sed -e 's/ /TAB/' test.dat (Ctrl-I used in the regexpr)
abcTABxyz
$ sed -e "s/\t/TAB/" test.dat
abcTABxyz
$ sed -e "s/\\t/TAB/" test.dat
abcTABxyz
$ sed -e "s/ /TAB/" test.dat (Ctrl-I used in the regexpr)
abcTABxyz
In the above examples I can type the TAB character in the shell
either using Ctrl-V followed by TAB or Ctrl-V followed by Ctrl-I.

【在 e*****w 的大作中提到】

: you need to escape \ with \\ ba.