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Old 04-29-2013, 04:47 PM   #1
sonia23
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Registered: Apr 2013
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Need lines displayed of the files containing a particular string


Hello,

I want to see all lines displayed containing a specific string in multiple files in multiple directory.

I have tried this command which helps me get the files which has a specific string, I also want the line to be displayed.(note trunk is a folder which has more folders and files within)

grep -r -l "inactiveConnectionTimeout" trunk/

or

find . -exec grep -l "inactiveConnectionTimeout" {} \;

To give more insight, I need to change value of inactiveConnectionTimeout from x to y value and so need this to check if I have really modified all files with the right new value.
 
Old 04-29-2013, 08:43 PM   #2
crabboy
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finding is easy enough, it would help to know what the file looks like, or specifically the line if changes are required.
 
Old 04-29-2013, 09:15 PM   #3
chrism01
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1. grep does display the whole of the line with the matched string
2. if you want all the lines set to a specific value, no need to check first, just used sed directly.
http://www.grymoire.com/Unix/Sed.html#uh-0
 
Old 04-29-2013, 11:37 PM   #4
sonia23
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There are almost 100 files in various directories with the variable
inactiveConnectionTimeout.

inactiveConnectionTimeout=20
some files has value has 20, some might have some other number
I need to change it to 300 in all files. So I am planning to do it manaully since value after = is not same.

After changing all the files I need to verify if I have changed all the files right, so need to know a command which would display only lines containing inactiveConnectionTimeout.
 
Old 04-30-2013, 12:15 AM   #5
chrism01
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Code:
# clear changed list file
>changed.list

# read filelist
while read file 
do
    # do replacement and make backup file just in case
    sed -i.bak 's/inactiveConnectionTimeout.*/inactiveConnectionTimeout=300/' $file

    # optionally, grep line out for later checking
    grep inactiveConnectionTimeout $file >>changed.list

done <filelist
Assumes files listed with full paths, one per line, in filelist file.
As above, no need to check existing value; if its already set, it just gets re-set ... same result.

Last edited by chrism01; 04-30-2013 at 12:17 AM.
 
1 members found this post helpful.
Old 04-30-2013, 01:19 PM   #6
sonia23
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Thanks Chris.

I need one more help- if someone can guide me
I have this code where safile has the bunch of file locations

while read safile
do
grep inactiveConnectionTimeout $safile >>changed.list
done <dqa6202

The above code prints all the lines in those file with inactiveConnectionTimeout line. That variable needs to have 300 value, but there are some lines with some different numbers.

So to put it short, how do I get the filename from safile in changed.list

For e,g safile has following contents
a
b
c
d
....till z
currently I am getting changed.list as
inactiveConnectionTimeout="300"^M
inactiveConnectionTimeout="300"^M
inactiveConnectionTimeout="300"^M
inactiveConnectionTimeout="300"^M
inactiveConnectionTimeout="300"^M
inactiveConnectionTimeout="300"^M
inactiveConnectionTimeout="20"
spes.inactiveConnectionTimeout=900
inactiveConnectionTimeout="300"^M
inactiveConnectionTimeout="300"^M
inactiveConnectionTimeout="300"^M


But this deosnt helps me to find which file has wrong content like 20 above, what command will give me output like
a
inactiveConnectionTimeout="300"^M
b
inactiveConnectionTimeout="300"^M
c
inactiveConnectionTimeout="300"^M
d
inactiveConnectionTimeout="300"^M
d
inactiveConnectionTimeout="300"^M
e
inactiveConnectionTimeout="20"^M
f
inactiveConnectionTimeout="300"
 
  


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