All Questions
Tagged with pattern-matching grep
42 questions
-1
votes
5
answers
77
views
multiline grep search into separate files per occurence
I have a file as following:
example.txt
-1
15
1 0 0 11 -1.0000E+001 1.0000E+001 -1.0000E+001
2 0 0 11 1.0000E+001 1.0000E+001 ...
- 101
1
vote
2
answers
52
views
replace both filename and filename's content relying solely on pattern found on the name-of-the-file
I'd like to know if it's possible to replace both filename.ext and a matched pattern inside its content regarding a pattern founded on the filename itself using sed (and grep also, maybe?).
Let me ...
- 33
3
votes
3
answers
1k
views
Find files matching one pattern, but not another, using grep, awk or sed [duplicate]
I need to locate .php and .pl files that do not contain one string (e.g. aaa), but do contain another (e.g. bbb).
I'm currently using this command:
find /path/ \( -iname '*.php*' -or -name '*.pl*' \) -...
- 2,792
4
votes
4
answers
728
views
grep multiple patterns with differing number of matching groups?
I'm trying to tally insertions and deletions from git diffs.
I have the following, which when piped one or more strings of the form "4 files changed, 629607 insertions(+), 123 deletions(-)" ...
- 143
0
votes
3
answers
757
views
Need to grep the word right next to or below a pattern
I have a file with the following lines in i:
.......... FROM ABCD_EXT
.......... FROM HEG_EXT1
.......... from
xyz_EXT
.......... FROM abd_EXT2
..........where QWT_EXT.SID=POI_EXT....
- 31
0
votes
1
answer
232
views
how to detect unbalanced special characters in string
I'm wondering what would be the best way (likely using grep or ack) to return lines containing unbalanced special character sets in a string? For example, if the string were:
bqM#+t1U"OyBGhk]ozVG[...
1
vote
6
answers
1k
views
print lines between 1st occurence of 1st pattern to last occurence of 2nd pattern with AWK
I have a datafile, with dates in 2nd column
# cat datafile
-;20210106;-;-;-;
-;20210112;-;-;-;
-;20210112;-;-;-;
-;20210112;-;-;-;
...
-;20210217;-;-;-;
-;20210217;-;-;-;
-;20210217;-;-;-;
-;20210217;-...
- 1,983
1
vote
2
answers
1k
views
Why does "grep -w" match words followed by hyphen/minus ("-")?
I need to ask you about using grep command in a Bash script in Debian.
I have got for example file with these lines:
/fruit-/apple.txt
/fruit-/banana.txt
/fruit-/samples
/vegetables-/carrot.txt
/...
- 45
2
votes
1
answer
1k
views
How can grep return a different number of matches?
I need to grep a file (24 lines) into two files (which are kind of big).
The original files contains 24 lines that resemble this string:
AATGGACGCTTAAC[A|C|T][A|C|G]CGGC[A|T]TCGGAT
I do the following:...
- 401
1
vote
2
answers
308
views
grep partial ip number from the file
I have to sort IP addresses into classes, so I can block entire class in myfirewall. It works fine when I try to do for /24 class, but not so well when do for /16 class. I have a list of IPs in the ...
- 176
-1
votes
2
answers
667
views
Finding files and matching patterns with printed filename in bash
I have the following code that lists matches far a pattern ptrn, with the filename being printed before the listing (which uses the context option -C NUM)
find "$fdir" "${isufx[*]}"...
- 393
0
votes
2
answers
43
views
Check if the second integer of a line in a file matches
I have a file with the below format of entries.
$ cat mw.hosts
host23v0242 USER=wsadmin MOUNTPOINT=/web
server21v0243 USER=wsadmin ...
- 517
3
votes
1
answer
10k
views
Grep pattern that has double quotes and variable substitution surrounded by single quotes
So, Let's say I have the following pattern:
Thisisatest="1"
in a file called file.
And I want to match the exact string above but for whatever reason, I choose to loop over some numbers ...
- 2,462
0
votes
3
answers
89
views
Printing all numeric data one by one
I am provided with text file which contains data (alphanumeric, special characters in any order and layout). Now I have to print all numeric data one by one.
Example :
this is txt *24354 filer3243gdt ...
- 324
0
votes
2
answers
146
views
Grep the RHS of the equal too sign [duplicate]
I am grepping into /etc/os-release and then I want to store the output in a variable. I had made a conditional script where I was not needing a variable but now I need one.
[[ ${$(grep ID_LIKE /etc/os-...
