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Top Forums UNIX for Dummies Questions & Answers How to delete one line from a text file Post 302398289 by murugaperumal on Wednesday 24th of February 2010 06:59:56 AM
Old 02-24-2010
Dear Friend,

If you want to affect the file, in the "sed" script you should use -i option while execute the command.

consider the following contents are there in the file
[cde]:[123]:[1]:[2]
[abc]:[456]:[1]:[5]

Code:
sed -i '/cde/d'  file

Now the file is contains only the following contents

[abc]:[456]:[1]:[5]
 

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DEFID(1)							   User Commands							  DEFID(1)

NAME
defid - [DESCRIPTION] SYNOPSIS
gid [OPTION]... PATTERN... DESCRIPTION
Query ID database and report results. By default, output consists of multiple lines, each line containing the matched identifier followed by the list of file names in which it occurs. -f, --file=FILE file name of ID database -i, --ignore-case match PATTERN case insensitively -l, --literal match PATTERN as a literal string -r, --regexp match PATTERN as a regular expression -w, --word match PATTERN as a delimited word -s, --substring match PATTERN as a substring Note: If PATTERN contains extended regular expression metacharacters, it is interpreted as a regular expression substring. Other- wise, PATTERN is interpreted as a literal word. -k, --key=STYLE STYLE is one of `token', `pattern' or `none' -R, --result=STYLE STYLE is one of `filenames', `grep', `edit' or `none' -S, --separator=STYLE STYLE is one of `braces', `space' or `newline' and only applies to file names when `--result=filenames' The above STYLE options control how query results are presented. Defaults are --key=token --result=filenames --separator=space -F, --frequency=FREQ find tokens that occur FREQ times, where FREQ is a range expressed as `N..M'. If N is omitted, it defaults to 1, if M is omitted it defaults to MAX_USHRT -a, --ambiguous=LEN find tokens whose names are ambiguous for LEN chars -x, --hex only find numbers expressed as hexadecimal -d, --decimal only find numbers expressed as decimal -o, --octal only find numbers expressed as octal By default, searches match numbers of any radix. --help display this help and exit --version output version information and exit REPORTING BUGS
Report bugs to bug-idutils@gnu.org SEE ALSO
The full documentation for defid is maintained as a Texinfo manual. If the info and defid programs are properly installed at your site, the command info defid should give you access to the complete manual. defid - 4.3.90.44-a04f September 2008 DEFID(1)
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