05-27-2002
delete lines
I have more than 1500 line and 30 files. if I use vi and "dd" I can complete until end of my life.
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Hi
I want to delete first five and last five lines in text files without opening the file and also i want to keep the same file name for all the files.
Thanks in advance!!!
Ragav (10 Replies)
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Hi
I am writing a script which should read a file and search for certain strings 'approved' or 'removed' and retain only those lines that contain the above strings.
Ex: file name 'test'
test:
approved package
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disapproved package
removed package
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Input:
a
b
b
c
d
d
I need:
a
c
I know how to get this (the lines that have duplicates) :
b
d
sort file | uniq -d
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Hiiii
I have a file which contains huge data as
a.dat:
PDE 1990 1 9 18 51 28.90 24.7500 95.2800 118.0 6.1 0.0 BURMA
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latitude: 24.4200
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6. Shell Programming and Scripting
Hello,
I have a group of text files with many lines in each file.
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Hi All,
I have a very huge file (4GB) which has duplicate lines. I want to delete duplicate lines leaving unique lines. Sort, uniq, awk '!x++' are not working as its running out of buffer space.
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hey guys,
I tried searching but most 'search and replace' questions are related to one liners.
Say I have a file to be replaced that has the following:
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TESTING
AAA
BBB
CCC
DDD
EEE
FFF
GGG
HHH
ENDTESTING
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Hello,
I'm trying to figure out how to use sed or awk to delete single lines in a file. By single, I mean lines that are not touching any other lines (just one line with white space above and below).
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one
two
three
four
five
six
seven
eight
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Hi all,
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parameter_3 = 0
user: alpha
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UTF8(5) BSD File Formats Manual UTF8(5)
NAME
utf8 -- UTF-8, a transformation format of ISO 10646
SYNOPSIS
ENCODING "UTF-8"
DESCRIPTION
The UTF-8 encoding represents UCS-4 characters as a sequence of octets, using between 1 and 6 for each character. It is backwards compatible
with ASCII, so 0x00-0x7f refer to the ASCII character set. The multibyte encoding of non-ASCII characters consist entirely of bytes whose
high order bit is set. The actual encoding is represented by the following table:
[0x00000000 - 0x0000007f] [00000000.0bbbbbbb] -> 0bbbbbbb
[0x00000080 - 0x000007ff] [00000bbb.bbbbbbbb] -> 110bbbbb, 10bbbbbb
[0x00000800 - 0x0000ffff] [bbbbbbbb.bbbbbbbb] ->
1110bbbb, 10bbbbbb, 10bbbbbb
[0x00010000 - 0x001fffff] [00000000.000bbbbb.bbbbbbbb.bbbbbbbb] ->
11110bbb, 10bbbbbb, 10bbbbbb, 10bbbbbb
[0x00200000 - 0x03ffffff] [000000bb.bbbbbbbb.bbbbbbbb.bbbbbbbb] ->
111110bb, 10bbbbbb, 10bbbbbb, 10bbbbbb, 10bbbbbb
[0x04000000 - 0x7fffffff] [0bbbbbbb.bbbbbbbb.bbbbbbbb.bbbbbbbb] ->
1111110b, 10bbbbbb, 10bbbbbb, 10bbbbbb, 10bbbbbb, 10bbbbbb
If more than a single representation of a value exists (for example, 0x00; 0xC0 0x80; 0xE0 0x80 0x80) the shortest representation is always
used. Longer ones are detected as an error as they pose a potential security risk, and destroy the 1:1 character:octet sequence mapping.
SEE ALSO
euc(5)
Rob Pike and Ken Thompson, "Hello World", Proceedings of the Winter 1993 USENIX Technical Conference, USENIX Association, January 1993.
F. Yergeau, UTF-8, a transformation format of ISO 10646, January 1998, RFC 2279.
The Unicode Standard, Version 3.0, The Unicode Consortium, 2000, as amended by the Unicode Standard Annex #27: Unicode 3.1 and by the Unicode
Standard Annex #28: Unicode 3.2.
STANDARDS
The utf8 encoding is compatible with RFC 2279 and Unicode 3.2.
BSD
April 7, 2004 BSD