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Shell Programming and Scripting

Help to mach "usb" exactly with sed or awk

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Top Forums Shell Programming and Scripting Help to mach "usb" exactly with sed or awk
# 8  
Old 03-17-2010
Code:
sed -n '/USB:/p' file | grep -c "usb"

# 9  
Old 03-17-2010
Quote:
Originally Posted by thillai_selvan
Code:
sed -n '/USB:/p' file | grep -c "usb"


no no no

Code:
$cat file
ABC: abc ABC FDFD
USB: usb usb_name usb_disk usbdriver USB
PA: PA pa paa

I want to how many usb exactly matched(not match usb_name or usbdriver) in the line cotains"USB:"
# 10  
Old 03-17-2010
MySQL
See the following grep command. -w option will match the word.

Code:
grep -w "usb" input_file

# 11  
Old 03-17-2010
Quote:
Originally Posted by ungalnanban
See the following grep command. -w option will match the word.

Code:
grep -w "usb" input_file

no that's no the answer, I want to know how many matched
# 12  
Old 03-17-2010
MySQL
-c option it will give the number of count.
Code:
grep -wc "usb" usb

Refer the following Like for more grep options
http://unixhelp.ed.ac.uk/CGI/man-cgi?grep
# 13  
Old 03-17-2010
Quote:
Originally Posted by ungalnanban
-c option it will give the number of count.
Code:
grep -wc "usb" usb

Refer the following Like for more grep options
UNIX man pages : grep ()
no no no
$ cat xxx
b usb usb usb_name usb_disk usbdriver USB usb_du
$ grep -wc "usb" xxx
1

it should be 2
$ sed -r "s/\busb\b/Match/g" xxx
b Match Match usb_name usb_disk usbdriver USB usb_du

I want to know how many Match usb exactly
# 14  
Old 03-17-2010
MySQL
Is it ok?

Code:
sed 's/ /\n/g' usb | grep -cw "usb"
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