How to print lines in one file matching patterns in another file?

How to print lines in one file matching patterns in another file?

It also lets you match on a whole field at a time so if your target strings were various lengths and you didn’t want “scign000003” to match “scign0000031” for example (though the -w for grep gives similar protection for that). For completeness, here’s the timing for the other awk solution posted elsethread:

How to create single comma separated stack in Bash?

For each line in the file; chop off the first field and spaces following, chop off the remainder of the line following the second field and append to the hold space. Delete all lines except the last where we swap to the hold space and after deleting the introduced newline at the start, convert all newlines to , ‘s.

How do you convert a string into a comma?

Delete all lines except the last where we swap to the hold space and after deleting the introduced newline at the start, convert all newlines to , ‘s. which finds the string starting with +, followed by any string \\S\\+, then convert new line characters into commas.

How to return multiple lookup values in one comma separated cell?

1 Hold down the ALT + F11 keys to open the Microsoft Visual Basic for Applications window. 2 Click Insert > Module, and paste the following code in the Module Window. VBA code: Return multiple lookup values… 3 Then save this code and close the Module window, go back to your worksheet, and enter this formula:… More

How to return only the portion of a line after a matching pattern?

So pulling open a file with cat and then using grep to get matching lines only gets me so far when I am working with the particular log set that I am dealing with. It need a way to match lines to a pattern, but only to return the portion of the line after the match. The portion before and after the match will consistently vary.

How to include the end of a line in match?

You can include it in the match by including .*$ at the end of the pattern (any text .* followed by the end of the line $ ). Unless you put that part in a group that you reference in the replacement text, the end of the line will not be in the output.

Is there way to filter before and after matches?

The portion before and after the match will consistently vary. I have played with using sed or awk, but have not been able to figure out how to filter the line to either delete the part before the match, or just return the part after the match, either will work. This is an example of a line that I need to filter:

How to compare two files for matching lines?

A0001 C001 B0003 C896 A0024 C234 . B1542 C231 . upto 28412 such lines A0001 A0024 B1542 . . and 12000 such lines. I want to compare File 2 against File 1 and store the matching lines from File 1.

How does the ismatch and match function work?

Description. The IsMatch function tests whether a text string matches a pattern that can comprise ordinary characters, predefined patterns, or a regular expression. The Match and MatchAll functions return what was matched, including sub-matches. Use IsMatch to validate what a user has typed in a Text input control.

What happens when no match is found in match?

Match returns blank if no match is found that can be tested with the IsBlank function. MatchAll returns an empty table if no match is found that can be tested with the IsEmpty function. If you’re using MatchAll to split a text string, consider using the Split function, which is simpler to use and faster.

How to print a pattern in a file?

$ time grep -Fwf File2 File1 > ou2 real 0m0.094s user 0m0.031s sys 0m0.062s $ time awk ‘NR==FNR {pats [$0]; next} $2 in pats’ File2 File1 > ou1 real 0m0.094s user 0m0.015s sys 0m0.077s $ diff ou1 ou2 i.e. it’s about as fast as the grep.

What’s the best way to pattern match fabric?

So I thought I’d show the foolproof (i.e. it works for me!) method I use for matching seams, so you too can be liberated in your fabric choices! Pattern matching fabrics with a regular and repeating pattern, like stripes or checks is one thing – the pattern itself actually helps in the pattern matching process.

How to use AWK to print only what is matched?

You can use awk with match () to access the captured group: This tries to match the pattern abc [0-9]+xyz. If it does so, it stores its slices in the array matches, whose first item is the block [0-9]+.

How do you subtract lines from a file?

The standard grep tool for searching files for text strings can be used to subtract all the lines in one file from another. This works by using each line in fileB as a pattern ( -f fileB) and treating it as a plain string to match (not a regular regex) ( -F ).

How to move lines from one file to another in Linux?

To append to file2, write to a temporary file and use cat to append at the end of file in a bash script, or use: N.B. For the last solution, only one input file can be modified at a time. You can use perl and select a different filehandle based in a match of a regular expression when printing:

How can I compare a file to a diff file?

The solution to that is to use a real comparison tool such as diff. You could do this by creating a diff file with the context value at 100% of the lines in the file, then parsing it for just the lines that would be removed if converting file A to file B. (Note this command also removes the diff formatting after it gets the right lines.)

How to read and match lines in Bash?

Line 3: End of while loop, which pipes in the file foo.text Note that “bird” is a regex. So that you could replace it with for example: bird.*word to match the same line with a regular expression. Try it with a file like so, called foo.text with the contents: The easier way to do this, is using grep (or egrep ).

How to match a line with a regex?

Note that “bird” is a regex. So that you could replace it with for example: bird.*word to match the same line with a regular expression. Try it with a file like so, called foo.text with the contents: The easier way to do this, is using grep (or egrep ).

How to remove common lines between two files?

To remove common lines between two files you can use grep, comm or join command. grep only works for small files. Use -v along with -f. This displays lines from file1 that do not match any line in file2. comm is a utility command that works on lexically sorted files.

How to add a line in SED if not match?

Opening file for output in the END block replaces the need for utilities like sponge or writing to a temporary file and then mv ing the temporary file to file. The two assignments to array a [] accumulate all output lines into a. if (!f)a [++n]=s appends the new option=value if the main awk loop couldn’t find option in file.

How can I print all the lines between two lines?

Closed 5 years ago. How can I print all the lines between two lines starting with one pattern for the first line and ending with another pattern for the last line? I guess it was a mistake to mention that this document is HTML. I seem to have touched a nerve, so forget that.

How to show all files up to match?

The output of this is a line for every block of text between two matches. After that it uses ‘head’ to choose the first line (mwaning the block of text until the first match) match and than retranslates each match to a new line. this option works only if the file is in the following format

How to replace two lines with a match?

The last option replaces all new lines with the match and than replaces two adjacent matches with a new line. The output of this is a line for every block of text between two matches.

How to replace a line of text in a text file?

This replaces all lines with the text ‘oldLine’, if you want to replace only the first one then you need to add a condition and break out of the loop.

How to replace a string in multiple files?

To replace a string in multiple files you can use: grep -rl string1 somedir/ | xargs sed -i ‘s/string1/string2/g’

How is SED used to find and replace string in files?

Quite often when working with text files you’ll need to find and replace strings of text in one or more files. sed is a stream editor. It can perform basic text manipulation on files and input streams such as pipelines. With sed you can search, find and replace, insert, and delete words and lines.

Which is the best tool to search and replace files?

However, for tougher jobs that involve regular expressions and back substitution, or file renames as well as search-and-replace, the most general and powerful tool I’m aware of is repren, a small Python script I wrote a while back for some thornier renaming and refactoring tasks. The reasons you might prefer it are: