I have a file which contains blocks of text - each block is a multi-lines text delimited by blank lines eg.
<blank line>
several lines of text
...
pattern found on this line
several more lines of text
...
<blank line>
How do you delete the block of text (including the blank lines) when... (17 Replies)
Hi,
I have two files viz,
rak1:
$ cat rak1
rak2:
$ cat rak2
sdiff rak1 rak2 returns:
I want the lines that got modified, changed, or deleted preceding with the section they are in.
I have done this so far: (1 Reply)
I want to change a line like
CPM_THRESHOLD 0.8 //
to a new value using sed
I am trying
sed -i "s/CPM_THRESHOLD/CPM_THRESHOLD\t$COH\t\t\/\//" $INPUT_4
but how can i substitute the whole line begining with CPM_THRESHOLD and substitute it? (2 Replies)
Hi All,
I have a file say abc.xml. In this file, I need to search for a pattern “SAP_GATEWAY_HOST”; if this pattern found and the next line also contain the pattern “nwprc03.cos” then I need to replace this pattern “nwprc03.cos” with some other pattern “nwdrc03.apjp”.
$ cat abc.xml... (3 Replies)
I am trying to do some thing like this ..
In a file , if pattern found insert new pattern at the begining of the line containing the pattern.
example:
in a file I have this.
gtrow0unit1/gctunit_crrownorth_stage5_outnet_feedthru_pin
if i find feedthru_pin want to insert !! at the... (7 Replies)
I thought that this was going to be quit simple using sed but i wasn't able to find a way to delete the second line of a text file if my pattern was not found in the line
With awk i am completly useless :rolleyes:
Any ideas? (2 Replies)
Hi,
suppose i have a txt file containing thye following data
2012156|sb3|nwknjps|BAYONNE|NJ|tcg
201221|094|mtnnjprc:HACKENSACK|NJ|tcg
201222|wn3|mtnnjtc|HACKENSACK|NJ|tcg
2018164|ik4|mtnntc|JERSEY CITY|NJ|tcg
20123482|ik4|mtnnjpritc,JERSEY CITY|NJ|tcg... (3 Replies)
Hi,
I have a file with the following content:
---------
a 3242 tc_5 gdfg4
random text
a 3242 tc_6 gdfg4
random text
a 3242 tc_7 gdfg4
random text
a 3242 tc_4 gdfg4
---------
I want to replace the lines containing tc_? (tc_5, tc_6 etc. even with unknown numbers) with the found... (5 Replies)
Hello!. I am working on a very simple program and I have been trying different things. This is so far what I have done and there is one small detail that still does not work. It finds all the records in a phonebook per say:
./rem Susan
More than one match; Please select the one to remove: ... (3 Replies)
hi,
i have /etc/inittab, I want to add another line after that when i find a pattern "l6:6:wait:/etc/rc.d/rc 6".
original
l6:6:wait:/etc/rc.d/rc 6
after-change
l6:6:wait:/etc/rc.d/rc 6
/sbin/if-pp-to-cng (3 Replies)
Discussion started by: learnbash
3 Replies
LEARN ABOUT MINIX
grep
GREP(1) General Commands Manual GREP(1)NAME
grep - search a file for lines containing a given pattern
SYNOPSIS
grep [-elnsv] pattern [file] ...
OPTIONS -e-e pattern is the same as pattern
-c Print a count of lines matched
-i Ignore case
-l Print file names, no lines
-n Print line numbers
-s Status only, no printed output
-v Select lines that do not match
EXAMPLES
grep mouse file # Find lines in file containing mouse
grep [0-9] file # Print lines containing a digit
DESCRIPTION
Grep searches one or more files (by default, stdin) and selects out all the lines that match the pattern. All the regular expressions
accepted by ed and mined are allowed. In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or 1
occurrences, and | can be used between two regular expressions to mean either one of them. Parentheses can be used for grouping. If a
match is found, exit status 0 is returned. If no match is found, exit status 1 is returned. If an error is detected, exit status 2 is
returned.
SEE ALSO cgrep(1), fgrep(1), sed(1), awk(9).
GREP(1)