You can use: grep -l Dansk * | xargs grep -l Norsk | xargs grep -l Svenska If you want also to find in hidden files: grep -l Dansk .* | xargs grep -l Norsk | xargs grep -l Svenska
Here is a simple one-line solution. $ function urldecode() { : “${*//+/ }”; echo -e “${_//%/\\x}”; } It may look like perl 🙂 but it is just pure bash. No awks, no seds … no overheads. Using the : builtin, special parameters, pattern substitution and the echo builtin’s -e option to translate hex codes into … Read more
Another sed, sed ‘/cdef/r add.txt’ input.txt input.txt: abcd accd cdef line web add.txt: line1 line2 line3 line4 Test: sat:~# sed ‘/cdef/r add.txt’ input.txt abcd accd cdef line1 line2 line3 line4 line web If you want to apply the changes in input.txt file. Then, use -i with sed. sed -i ‘/cdef/r add.txt’ input.txt If you want … Read more
This works for me sed ‘/^all:/ s/$/ anotherthing/’ file The first part is a pattern to find and the second part is an ordinary sed’s substitution using $ for the end of a line. If you want to change the file during the process, use -i option sed -i ‘/^all:/ s/$/ anotherthing/’ file Or you … Read more
Specify NR if you want to capture output from selected rows: awk ‘NR==1{print $1}’ /etc/*release An alternative (ugly) way of achieving the same would be: awk ‘{print $1; exit}’ An efficient way of getting the first string from a specific line, say line 42, in the output would be: awk ‘NR==42{print $1; exit}’
grep -Fxvf file1 file2 What the flags mean: -F, –fixed-strings Interpret PATTERN as a list of fixed strings, separated by newlines, any of which is to be matched. -x, –line-regexp Select only those matches that exactly match the whole line. -v, –invert-match Invert the sense of matching, to select non-matching lines. -f FILE, –file=FILE Obtain … Read more
Using paste command: paste -d, -s file
To print the second line: awk ‘FNR == 2 {print}’ To print the second field: awk ‘{print $2}’ To print the third field of the fifth line: awk ‘FNR == 5 {print $3}’ Here’s an example with a header line and (redundant) field descriptions: awk ‘BEGIN {print “Name\t\tAge”} FNR == 5 {print “Name: “$3″\tAge: “$2}’ … Read more
Use Awk. awk ‘{ print length }’ abc.txt
My sed (Mac OS X) didn’t work with +. I tried * instead and I added p tag for printing match: sed -n ‘s/^.*abc\([0-9]*\)xyz.*$/\1/p’ example.txt For matching at least one numeric character without +, I would use: sed -n ‘s/^.*abc\([0-9][0-9]*\)xyz.*$/\1/p’ example.txt