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04-23-2012, 12:27 AM
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#1
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Member
Registered: Apr 2012
Location: Bangalore,India
Posts: 41
Rep: 
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How do I program in shell script for write a word if it finds another word
I have a file named medpre.msg.log
Script should search for a word 'degenerated'
If it finds the word 'degenerated' , then it should write 'ECHT' on already existing file Mcheck.prot
How should I write the program, please help me . I am new to shell scripting
Thank you in advance...... 
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04-23-2012, 01:19 AM
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#3
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Member
Registered: Apr 2012
Location: Bangalore,India
Posts: 41
Original Poster
Rep: 
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Sorry I have not done anything so far , I need help extensively to do this program..
I have a file medpre.msg.log in the path /home/balnair/.medina/medpre.msg.log
and another file in the path /home/transfer/Mcheck.prot
script should search for the word 'degenerated' in medpre.msg.log
If it finds it should append 'ECHT' to file Mcheck.prot
So how can be done
log_file = " /home/balnair/.medina/medpre.msg.log "
work = "/home/transfer/Mcheck.prot"
if [ !"degenerated" = $log_file ] # please correct it
then
echo " ECHT " >>$work
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04-23-2012, 01:45 AM
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#4
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LQ Addict
Registered: Mar 2012
Location: Hungary
Distribution: debian/ubuntu/suse ...
Posts: 24,502
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see the man page of grep, it will help you
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04-23-2012, 02:07 AM
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#5
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Member
Registered: Apr 2012
Location: Bangalore,India
Posts: 41
Original Poster
Rep: 
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ok i have put
find = " grep degenerated $logfile | wc -l "
if [ $find >1]
then
echo " ECHT " >> $work
but it doesnt work.......
Last edited by bal_nair1; 04-23-2012 at 02:09 AM.
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04-23-2012, 02:14 AM
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#6
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LQ Veteran
Registered: Sep 2003
Posts: 10,532
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Hi,
Give this a try:
Code:
if [ $( grep "degenerated" "$logfile" ) ]
then
echo "ECHT" >> "$work"
fi
Hope this helps.
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04-23-2012, 02:16 AM
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#7
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LQ Guru
Registered: Sep 2009
Location: Perth
Distribution: Arch
Posts: 10,038
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Explain what is not working? Also, what shell are you using?
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04-23-2012, 02:43 AM
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#8
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LQ Addict
Registered: Mar 2012
Location: Hungary
Distribution: debian/ubuntu/suse ...
Posts: 24,502
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more simple: grep degenerated $logfile && echo ECHT >> "$work"
---------- Post added 23rd Apr 2012 at 09:44 ----------
Quote:
Originally Posted by grail
Explain what is not working? Also, what shell are you using?
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he should add a space before ]
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04-23-2012, 06:04 AM
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#9
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LQ Guru
Registered: Sep 2009
Location: Perth
Distribution: Arch
Posts: 10,038
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Quote:
he should add a space before ]
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So that is the only error you see? Remember, just telling someone the answer won't really help them much for next time.
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04-23-2012, 06:28 AM
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#10
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LQ Addict
Registered: Mar 2012
Location: Hungary
Distribution: debian/ubuntu/suse ...
Posts: 24,502
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Quote:
Originally Posted by grail
So that is the only error you see? Remember, just telling someone the answer won't really help them much for next time.
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If someone wants to learn linux he would better solve such problems himself. So yes, I will show him a starting point. If there were other errors he should find them easily there are only 5 lines of codes to check.
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