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Top Forums Shell Programming and Scripting pattern match and replace another pattern in same line Post 302574853 by Corona688 on Friday 18th of November 2011 01:16:09 PM
Old 11-18-2011
This will print all lines, but first modify the shell field if the username matches username.

Code:
awk -v FS=: -v OFS=: -v USER="username" '$1==USER { $7="/usr/local/my/bin/noshell" } 1' < input > output

# CHECK THE OUTPUT FIRST before overwriting your input!
# You don't want to mangle /etc/passwd by accident.
# Also, overwrite it, don't do mv output input.  
# Changing /etc/passwd's ownership or permissions would be bad.
cat output > input

 

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FC-PATTERN(1)															     FC-PATTERN(1)

NAME
fc-pattern - parse and show pattern SYNOPSIS
fc-pattern [ -cdVh ] [ --config ] [ --default ] [ [ -f format ] [ --format format ] ] [ --version ] [ --help ] [ pattern [ element... ] ] DESCRIPTION
fc-pattern parses pattern (empty pattern by default) and shows the parsed result. If --config is given, config substitution is performed on the pattern before being displayed. If --default is given, default substitution is performed on the pattern before being displayed. If any elements are specified, only those are printed. OPTIONS
This program follows the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. -c Perform config substitution on pattern. -d Perform default substitution on pattern. -f Format output according to the format specifier format. -V Show version of the program and exit. -h Show summary of options. pattern Parses and displays pattern (uses empty pattern by default). element If set, the element property is displayed for parsed pattern. SEE ALSO
FcNameParse(3) FcConfigSubstitute(3) FcDefaultSubstitute(3) FcPatternPrint(3) FcPatternFormat(3) fc-cat(1) fc-cache(1) fc-list(1) fc- match(1) fc-query(1) fc-scan(1) The fontconfig user's guide, in HTML format: /usr/share/doc/fontconfig/fontconfig-user.html. AUTHOR
This manual page was updated by Behdad Esfahbod <behdad@behdad.org>. Apr 20, 2010 FC-PATTERN(1)
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