Hi All,
Can please let me know what is the difference between the single line mode and multi line mode in regular expresions?
Thanks,
Chidhambaram B (3 Replies)
I know through (my very limited) experience that you can't use the asterisk alone in a regex, but I still don't quite understand why. After all, it should match 'any or no characters'. To my mind, '*grep' should match:
grep
egrep
fgrep
While '.*grep' should match
egrep
fgrep
...but... (3 Replies)
Hi,
i have a file as give below
>cat sample_file
param1 val1 2012-06-19
##there can be one or more space after 2012-06-19 in the above file
i want to replace val1 with a with value passed through a variable...
below is the command i tried
>parval='param1 val2'
>par1=param1
>sed... (3 Replies)
I need decimal comparing with if. Check if apache version is less than 2.2.17.
I tried this and not working.
#!/bin/bash
apachever=`/usr/local/apache/bin/httpd -v | head -1 | awk '{print $3}' |cut -d/ -f 2`
if ]; then
echo "Apache version less than 2.2.17"
else
... (7 Replies)
hi,
i need to remove the extra spaces in the 2nd field.
Sample:
abc|bd |bkd123 .. 1space
abc|badf |bakdsf123 .. 2space
abc|bqe |bakuowe .. 3space
Output:
abc|bd|bkd123
abc|badf|bakdsf123
abc|bqe|bakuowe
i used the following command, (9 Replies)
Hi,
I have a lot of files which begin with the letter x:
xab
xac
xad
xae
...
I want to join all file with cat, i do
cat x* > file
My question is, by instinct i thank use cat x.* > file for join all file but don't work, why ? (8 Replies)
My original files are like this below and I distinguish them from the AP_ID (file1 has 572 and file2 has 544). Also, the header on file1 has “G_” pre-pended. NOTE: these are only snippets of very large files and much of the data is not present here.
Original File 1:
... (36 Replies)
I have a file with multiple lines, all in the same format. For each line, I need to replace the sequence of digits after the last : with a new value, but keep the single quote at the end of the line.
Example:
Input: ( two lines of file)
Name: 'text1:200/text2:1.2.3.4'
Name2:... (19 Replies)
i have data that can look like this:
echo "Master_Item_Service_is_down=0_njava_lang_NoClassDefFoundError=0_njava_lang_OutOfMemoryError=1_nemxCommonAppInitialization__Error_while_initializing=0_nINFO__Stopping_Coyote_HTTP_1_1_on_http_8080=7_nThe_file_or_directory_is_corrupted_and_unreadable=0_n" ... (7 Replies)
I am trying to create a cronjob that will run on startup that will look at a list.txt file to see if there is a later version of a database using database.txt as the source. The matching lines are written to output.
$1 in database.txt will be in list.txt as a partial match. $2 of database.txt... (2 Replies)
I would like to include in my zip file a particular file name On_Resume which has no file extension.
This does not work.
zip -u Ubuntu_Documents.zip *.txt *.doc *.rtf *.html *.png *.pdf *.odt *.ods *.odg *.csv *.png *.xls On_Resume* (14 Replies)