bash AWK backslash as one of the many Stack Overflow 👄

Escaping backslash in AWK in command substituion Stack Overflow

command line How can I add a backslash before all spaces

string how to globally replace backslash Stack Overflow

sed bash insert backslash for every slash in string Unix

How can I add a backslash using sed Ask Ubuntu

Recognising backslash in awk field separator Stack Overflow

awk get information on input and output filenames from file

linux Using FILENAME in awk script Stack Overflow

How do I insert a blank line every n lines using awk Stack

Using Awk with escape characters inside a Bash script

How to merge Multiple lines into one line only if the

java StringreplaceAll single backslashes with double

How do I escape slashes and double and single quotes in sed

bash Awk doubleslash record separator Stack Overflow


2 juin 2024 · awk 'FNR%2==0{s=$0; print substr($s,18,20); next} 1' test.fq It works fine when there are no slashes in the strings, and also sometimes when there are slashes, but not for the above string. Can anyone please advise how to fix this?. 1 août 2024 · 2 Answers. A string inside forward slashes is a regex string in awk like /test/ not an operation just like the match () function is a function and not an operation. The syntax /test/ {print $0} is short hand if ($0~/test/) {print $0} where ~ is the regexp comparison operator. 13 mai 2024 · Using this command, I can add. awk ' {print "\""$0}' file. But I want to add , why this command doesn't work? awk ' {print "\'"$0}' file. 7 Answers 7. You absolutely CANNOT use a single quote inside a single-quote-delimited script as that quote absolutely denotes the end of that script [segment]. 11 juin 2009 · line 1 line 2 line 3 line 4 line 5 line 6. I'd like to use awk to insert a blank line every few lines; for example, every two: line 1 line 2 line 3 line 4 line 5 line 6. How can I get awk to put a blank line into my file every n lines? awk. blank-line. Share. I need to add a prefix (e.g. myprefix_) to every line in the file: myprefix_aaa myprefix_bbb myprefix_ccc myprefix_ddd I can do that with awk: awk '{print "myprefix_" $0}' a.txt . Now I wonder if there is another way to do that in shell. 13 févr. 2014 · How can I add a back slash before every space so I get correct *nix paths. ie. /mnt/data/web/web\ content/page\ 1/home\ page.txt. the text could theoretically be infinitely long but I always need a backslash before every space. Final script is to be used in freebsd & linux. thanks!. 26 oct. 2024 · 23.9k 41 139 210. 3. Note that a) those are Record Separators, not Field Separators, 2) use of a multi-character RS makes your script gawk-specific, 3) you don't need to use cat to open the file, awk can do it by itself, and 4) "print $0" is the default action so you could have just said " {print}" or even the common, idiomatic "1". 28 avr. 2024 · Alternatively, we could put both options in square brackets like: $ awk -F' [ [:blank:]/]' ' {print $2}' file 10.190.120.13. If you, as per the title, you want space or slash or comma as the separator, try: $ awk -F' [ [:blank:]/,]' ' {print $2}' file 10.190.120.13. Share. 12 juil. 2024 · awk -F'= ' '/default:/,/umask =/{ if(/umask =/){ print $2 } }' /etc/security/user -F sets the input field separator. The code matches lines with umask = in them and prints their second fields. 28 mars 2017 · I read another answer that show how one can set the field separator using the -F flag: awk -F 'INFORMATION DATA ' '{print $2}' t Now I'm curious how I can use a regex for the field separator. My attempt can be seen below:. 22 nov. 2024 · Now, remember - awk is not shell, so double quotes inside an awk script are part of the awk language, not part of the shell language, and so do not have the same semantics. When you write "foo" in awk you're not inviting awk or the shell or anything else to interpret it, you're writing a literal string, just like if you wrote 'foo. 19 oct. 2024 · There are many instances in this log file of a backslash character (not as an 'escape') immediately followed by a single quote mark \'. Thus it is a two character text pattern. I am looking for awk or sed examples which will match the two character \' pattern, and replace it with the single character pattern of a single quote '. In. 27 avr. 2024 · I am having trouble printing (or searching) for sequences containing backslashes when using awk For example -. echo "test\test" | awk ' { gsub (/\\\\t/, "\\\\&"); print }'. will give the result: test est. because the \t will be interperted as tab. 1 août 2024 · 1. The basic syntax of awk is that it's a sequence of: . The is an expression that's tested on each line; if it's true, the is executed. If action is a { } block, it must contain statements. In a statement, to test a condition you have to use if. Another way to think of it is that there's an implicit. 28 janv. 2015 · Confusing backslash before awk, what does it mean? #!/usr/bin/env bash for year in all/* do echo -ne `basename $year .gz`"\t" gunzip -c $year | \ awk ' { temp = substr ($0, 88, 5) + 0; q = substr ($0, 93, 1); if (temp !=9999 && q ~ / [01459]/ && temp > max) max = temp } END { print max }' done. I've a small doubt over this Awk script. 25 mai 2017 · index($0,ENVIRON["search"]) && match($0,/id=[0-9]+/) { print substr($0, RSTART+3, RLENGTH-3) } Get the book Effective Awk Programming, 4th Edition, by Arnold Robbins to learn how to use awk. 13 janv. 2024 · so the input file looks like this: How do I replace the linefeed character in this file with so that I can substitute this value later when I build valid json data, i.e. the expected output would be: {"output":"Hello\ mate"} Right now this is my bash script. By clicking “Post Your Answer”, you agree to our. 10 août 2024 · I'm trying to replace all of the "\" with "|" to send it to the server. I know I can use the replace method but that only replaces the first element. I think I need to use a regular expression to solve it. Here's what I have so far: Path = Path.replace ("\\/g", "|"); This is wrong though. To avoid this sort of trouble, you can use replace (which takes a plain string) instead of replaceAll (which takes a regular expression). You will still need to escape backslashes, but not in the wild ways required with regular expressions. 12 oct. 2016 · I need to replace \ with / in a path string, but following code failed. package main import ( "fmt" "strings" ) func main() { string := "P:\Project\project-name/content/topic/" fmt. 25 déc. 2024 · # Replace all backslashes in a String in JavaScript. Use the String.replaceAll() method to replace all backslashes in a string, e.g. const result = str.replaceAll('\\', '-');. The replaceAll method returns a new string with all matches replaced by the provided replacement.