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Top Forums UNIX for Beginners Questions & Answers How to iterate Grep via all patterns provided in an input file? Post 303020698 by nsai on Wednesday 25th of July 2018 06:40:14 PM
Old 07-25-2018
How to iterate Grep via all patterns provided in an input file?

When I use the following grep command with options -F and -f, its just displaying the text related to only the last pattern.

Command: $ grep -f pattern_file.txt input_file.txt

Output: doc-C2-16354

Even the following command yields the same output:
Command: $ grep -Ff pattern_file.txt input_file.txt


Contents of the pattern_file.txt:
Code:
A1
B3
C2

Contents of the input_file.txt:
Code:
doc-A1-151
file-A2-15646
table-A3-1654
file-B1-15654
doc-B2-15654
table-B3-13546
file-C1-164654
doc-C2-16354
table-C3-13565

Expected output:
Code:
doc-A1-151
table-B3-13546
 doc-C2-16354





Moderator's Comments:
Mod Comment Please use CODE tags as required by forum rules!



Last edited by RudiC; 07-26-2018 at 05:47 AM.. Reason: Added CODE tags.
 

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set_color(1)							       fish							      set_color(1)

NAME
set_color - set_color - set the terminal color set_color - set the terminal color Synopsis set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR] Description Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple, cyan, white and normal. o -b, --background Set the background color o -c, --print-colors Prints a list of all valid color names o -h, --help Display help message and exit o -o, --bold Set bold or extra bright mode o -u, --underline Set underlined mode o -v, --version Display version and exit Calling set_color normal will set the terminal color to whatever is the default color of the terminal. Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey font color, while set_color --bold white will result in a white font color. Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator. set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of ncurses and recompile fish against it in order to fix this issue. Version 1.23.1 Sun Jan 8 2012 set_color(1)
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