Sed can do it as follows: sed -n ‘/^======/{:a;N;/\n——/!ba;/score +/p}’ infile ====== Ann Smith score + —— where -n prevents printing, and /^======/ { # If the pattern space starts with “======” :a # Label to branch to N # Append next line to pattern space /\n——/!ba # If we don’t match “——“, branch to … Read more
With GNU grep: grep ‘[[:alpha:]]’ file or GNU sed: sed ‘/[[:alpha:]]/!d’ file Output: 0hjjAby68xp H5e 1 solved How do you delete all lines that contain no letters from the alphabet using either grep, sed, or awk? [closed]
awk ‘$1 != “Banana” {s+=$(NF-2)} END { print s}’ RS= fruites.txt The key here is the RS= assignment which makes awk treat each section of text delimited by blank lines as a separate record. Note that you may prefer to write RS=”” fruites.txt for clarity, but that is not necessary. Be sure not to omit … Read more
With awk: awk ‘BEGIN{FS=”[ ,]”; OFS=”,”} {for (i=2; i<=NF; i++) print $i,$1}’ file Output: foo,ted bar,ted zoo,ted ket,john ben,john See: 8 Powerful Awk Built-in Variables – FS, OFS, RS, ORS, NR, NF, FILENAME, FNR solved How can I manipulate text in bash? [closed]
Of course, try this: $0 ~ fun { count = 1 while (! ($0 ~ /{/)) getline getline } count > 0 { if ($0 ~ /{/) count++ if ($0 ~ /}/) count– if ($0 ~ query) print FILENAME “: l” FNR “. ” $0 } And invoke the script like this: awk -v query=”pankaj” … Read more
$ sed -nr ‘/Username/{n;s#.*>(.*)<.*#\1#p}’ file wipis_dxu Brief explanation, /Username/: find Username n: Read the next line of input s#.*>(.*)<.*#\1#p: extract the string between > … < 2 solved Grep a word from XML file with grep/sed
If you can slurp whole input: perl -e’undef$/; $a=<>; print “$_\n” for $a=~m/(?:\b\S+\b\s+){5}your regexp(?:\s+\b\S+\b){5}/sg ‘ <input — 5 words of context. solved how to print n words of context while searching text [closed]
I would harness GNU AWK for this task following way, let file.txt content be 9003103 9003103 9003978 9003979 9003763 9003728 9003543 9003543 9003543 then awk ‘BEGIN{RS=””}{diff=$NF-$1;diff=diff>0?diff:-diff}diff>NF’ file.txt gives output 9003763 9003728 Explanation: I set RS to empty string to provoke paragraph mode, thus every block is treated as single line, then for each block I … Read more
In POSIX grep, -v is a matching control option to invert match. In this usage case, it is telling grep to match all lines that do NOT contain the string “:0” For more information, man grep 1 solved how does the bash command “grep -v “:0″” work
One way: awk ‘/Delete-me/ {getline;getline;getline;print;getline;print}’ 3 4 3 4 3 4 Another way awk ‘NR%5==0 || NR%5==4’ 3 4 3 4 3 4 0 solved Delete row + the following 2 rows if a certain row name using UNIX [closed]
That’ll do the trick import re s=””text” “some”” res = re.subn(‘”([^”]*)”‘, ‘<em>\\1</em>’, s)[0] solved grep with python to match string inside quotes in html files [closed]
For your case, you have one line of leading and one line of trailing context you care about, so grep -C1 Toronto input should do it. 0 solved Linux grep command with relevant values as output
‘grep’ contains decade’s worth of optimizations, and re-implementing it in any programming language, not just Python, will be slower. *1 Therefore, if speed is important to you, your technique of calling ‘grep’ directly is probably the way to go. To do this using ‘subprocess’, without having to write any temporary files, use the ‘subprocess.PIPE’ mechanism: … Read more
grep -oP ‘^server\s\K[^ ]+|^[^#]\s+\d+:\K[^:]+’ inputfile pool0 server1 server2 pool1 server3 server4 4 solved Extract specific string between two strings and list the required content
Try this awk: awk -F'”‘ ‘NR%2{p1=$4;next} {print p1 “https://stackoverflow.com/” $4}’ Test: $ awk -F'”‘ ‘NR%2{p1=$4;next} {print p1 “https://stackoverflow.com/” $4}’ file abc/123abc bac/bac123 cde/cd123 b4u/b4u234 2 solved grep values and re-arranging the file