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Shell Programming and Scripting
How to delete particular rows from a file
Post 302201333 by era on Monday 2nd of June 2008 02:27:44 AM
06-02-2008
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1. Shell Programming and Scripting
Hi everybody:
Could anybody tell me how I can delete repeated rows from a file?, this is, for exemple I have a file like this:
0.490 958.73 281.85 6.67985 0.002481
0.490 954.833 283.991 8.73019 0.002471
0.590 950.504 286.241 6.61451 0.002461
0.690 939.323 286.112 6.16451 0.00246
0.790... (8 Replies)
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I have a file content like below.
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2
3
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Say i have a file with X rows and Y columns....i see that in some of the rows,some columns are blank (no value set)...i wish to delete such rows....how can it be done?
e.g
181766 100 2009-06-04
184443 2009-06-04
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Hi
I do have a text file with 1000's of lines with 1 row and column with a specific pattern.
1102
1
1
1
1
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1
1
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1
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1
1
1
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I have a Unix file with 200,000 records, and need to remove all records from the file that have the character ‘I' in position 68 (68 bytes from the left). I have searched for similar problems and it appears that it would be possible with sed, awk or perl but I do not know enough about any of these... (7 Replies)
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Hi all,
I have a big file (about 6 millions rows) and I have to delete same occurrences, stored in a small file (about 9000 rews). I have tried this:
while read line
do
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Hi All,
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LEARN ABOUT LINUX
zegrep
ZGREP(1) General Commands Manual ZGREP(1) NAME
zgrep - search possibly compressed files for a regular expression SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename... DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code: (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep. If the GREP environment variable is set, zgrep uses it as the grep program to be invoked. EXIT CODE
2 - An option that is not supported was specified. AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1) ZGREP(1)