1x(USP)

Name

1x : Remove leading zeroes

Synopsis

Usage   : 1x [-r] f1 f2 .. file

          1x -d[r] string

Version : Wed Mar 14 22:39:33 JST 2018

Edition : 1

Description

Removes the leading zeroes from the specified

field or specified string within the specified file.

(Also removes trailing zeroes after the decimal

point.)

Example 1

$ cat data

0000000 Smith______ 50 F 91 59 20 76 54

0000001 Jones______ 50 F 46 39 8  5 21

0000003 Wilson_____ 26 F 30 50 71 36 30

0000004 Drake______ 40 M 58 71 20 10 6

0000005 Hawking____ 20 M 82 79 16 21 80

0000007 Penrose____ 42 F 50 2  33 15 62

$ 1x 1 data > data2

$ cat data2   <- Remove leading zeroes from first field.

0 Smith______ 50 F 91 59 20 76 54

1 Jones______ 50 F 46 39 8 5 21

3 Wilson_____ 26 F 30 50 71 36 30

4 Drake______ 40 M 58 71 20 10 6

5 Hawking____ 20 M 82 79 16 21 80

7 Penrose____ 42 F 50 2 33 15 62

Example 2

-r (reverse) This option multiplies number by -1.

$ cat file

a 1 2 3 4 5

b 1 2 3 4 5

$ 1x -r 2 file

a -1 2 3 4 5

b -1 2 3 4 5

$ 1x -r 2/4 file

a -1 -2 -3 4 5

b -1 -2 -3 4 5

$ 1x -r 2 NF-1/NF file

a -1 2 3 -4 -5

b -1 2 3 -4 -5

Example 3

Combines up3 and sm2 to perform subtraction

on records containing the same key.

$ cat data

a 5

b 2

$ cat data2

a 2

b 1

$ 1x -r 2 data2 | up3 key=1 data | sm2 1 1 2 2

a 3

b 1

Example 4

-d directly specifies the string you want to

edit in direct mode.

$ 1x -d 0123

123

$ 1x -d 0123.400

123.4

$ 1x -d 0123.000

123

$ 1x -d 0

0

$ 1x -d -000123.400

-123.4

$ 1x -d +000123.400

123.4

$ 1x -dr 0123

-123

Example 5

Removes leading zeroes in order to nullify the

automatic conversion to octal normally performed

by the shell or the awk printf command.

$ num=010   <- Interpreted as octal

$ printf '%04d\n' $num

0008

$ printf '%04d\n' $(1x -d $num)

0010

Example 6

Fixed-length text strings often contain leading

zeroes, trailing zeroes and punctuation.  The

1x command is helpful here.

$ cat file

a 000123.000 000345.000

b 000098.450 000100.000

$ 1x 2 3 file

a 123 345

b 98.45 100

Notes

Derivation of Command Name

Called 1x because you multiply the numeric string

by 1 to remove the zeroes.