How to check a word position in a file ? - Shell Programming and Scripting

tibo · #1 01-03-2008

Hello everybody,
I have a file like this : "window 1 truck 3 duck 2... fire 1... etc..." and I would like to print the following number of a word I am searching for. (For example here, if I search for the word "fire", I will print "1")
Thank you for your help !

shamrock · #2 01-03-2008

Quote:

Originally Posted by tibo

Hello everybody,
I have a file like this : "window 1 truck 3 duck 2... fire 1... etc..." and I would like to print the following number of a word I am searching for. (For example here, if I search for the word "fire", I will print "1")
Thank you for your help !

Code:

sed 's/.* fire \([0-9][0-9]*\) .*/\1/' file

ghostdog74 · #3 01-03-2008

Code:

s="window 1 truck 3 duck 2... fire 1"
f=0
for i in $s;  
do  
    if [ $f -eq 1 ];then    
      echo "Found number $i"
    fi
    case $i in 
      fire) f=1 ; continue;;
    esac;  
done

rikxik · #4 01-03-2008

Quote:

Originally Posted by shamrock

Code:

sed 's/.* fire \([0-9][0-9]*\) .*/\1/' file

Doesn't work here:

Code:

$ uname -a
SunOS db012a 5.8 Generic_117350-35 sun4us sparc FJSV,GPUZC-M
$ which sed
/usr/bin/sed
$ cat file
window 1 truck 3 duck 2 fire 1
$ sed 's/.* fire \([0-9][0-9]*\) .*/\1/' file
window 1 truck 3 duck 2 fire 1

ghostdog74 · #5 01-03-2008

Quote:

Originally Posted by rikxik

Doesn't work here:

Code:

$ uname -a
SunOS db012a 5.8 Generic_117350-35 sun4us sparc FJSV,GPUZC-M
$ which sed
/usr/bin/sed
$ cat file
window 1 truck 3 duck 2 fire 1
$ sed 's/.* fire \([0-9][0-9]*\) .*/\1/' file
window 1 truck 3 duck 2 fire 1

This is because in your sample file, after the "1", there is no space.
The sed statement has a <space> after the \) bracket. It should be

Code:

# sed 's/.* fire \([0-9][0-9]*\).*/\1/' file
1

for your case of sample file

rikxik · #6 01-03-2008

Then lets do this:

Code:

sed 's/ *.*fire \([0-9][0-9]*\).*/\1/' file

Works with/without leading/trailing spaces.

shamrock · #7 01-03-2008

Quote:

Originally Posted by rikxik

Then lets do this:

Code:

sed 's/ *.*fire \([0-9][0-9]*\).*/\1/' file

Works with/without leading/trailing spaces.

But the above pattern will also catch words like backfire, spitfire etc...

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
check position of end of line(URGENT PLS)	evvander	Shell Programming and Scripting	6	11-11-2007 02:46 PM
check position of end of line for some specific lines	senthil_is	Shell Programming and Scripting	1	11-08-2007 10:19 PM
how to check a word in a file and assign to a variable	hippo2020	Shell Programming and Scripting	1	06-28-2007 09:00 AM
Change Position of word character	cedrichiu	Shell Programming and Scripting	6	03-11-2007 10:52 PM
Can a shell script pull the first word (or nth word) off each line of a text file?	tricky	Shell Programming and Scripting	5	08-17-2006 03:29 AM

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode