$ sed -n ‘s/.*href=”https://stackoverflow.com/questions/21264626/\([^”]*\).*/\1/p’ file http://www.drawspace.com/lessons/b03/simple-symmetry http://www.drawspace.com/lessons/b04/faces-and-a-vase http://www.drawspace.com/lessons/b05/blind-contour-drawing http://www.drawspace.com/lessons/b06/seeing-values
This seems to work for me: LANG=C grep –only-matching –byte-offset –binary –text –perl-regexp “<\x-hex pattern>” <file> short form: LANG=C grep -obUaP “<\x-hex pattern>” <file> Example: LANG=C grep -obUaP “\x01\x02” /bin/grep Output (cygwin binary): 153: <\x01\x02> 33210: <\x01\x02> 53453: <\x01\x02> So you can grep this again to extract offsets. But don’t forget to use binary mode … Read more
You might also run into a problem with grep buffering when inside a pipe. ie, you don’t see the output from tail –follow=name file.txt | grep something > output.txt since grep will buffer its own output. Use the –line-buffered switch for grep to work around this: tail –follow=name file.txt | grep –line-buffered something > output.txt … Read more
Try: for a in [0-9]*.txt; do mv $a `printf %04d.%s ${a%.*} ${a##*.}` done Change the filename pattern ([0-9]*.txt) as necessary. A general-purpose enumerated rename that makes no assumptions about the initial set of filenames: X=1; for i in *.txt; do mv $i $(printf %04d.%s ${X%.*} ${i##*.}) let X=”$X+1″ done On the same topic: Bash script … Read more
You can cascade greps with different colors by specifying –color=always and using the regular expression ‘foo|$’ to pass all lines. For example: tail -f myfwlog | GREP_COLOR=’01;36′ egrep –color=always ‘ssh|$’ | GREP_COLOR=’01;31′ egrep -i –color=always ‘drop|deny|$’ If you want the entire line to be highlighted, update your regular expression accordingly: …. GREP_COLOR=’01;31′ egrep -i –color=always … Read more
Sure: ps -ef | grep bar | { grep -v grep || true; } Or even: ps -ef | grep bar | grep -v grep | cat
Tell grep to treat your input as fixed string using -F option. grep -F ‘*^%Q&$*&^@$&*!^@$*&^&^*&^&’ application.log Option -n is required to get the line number, grep -Fn ‘*^%Q&$*&^@$&*!^@$*&^&^*&^&’ application.log
There is a command-line tool called FINDSTR that comes with all Windows NT-class operating systems (type FINDSTR /? into a Command Prompt window for more information) It doesn’t support everything grep does but it might be sufficient for your needs.
If using GNU grep, you can use the Perl-style regexp: grep -P ‘\t’ *
grep -nr ‘yourString*’ . The dot at the end searches the current directory. Meaning for each parameter: -n Show relative line number in the file ‘yourString*’ String for search, followed by a wildcard character -r Recursively search subdirectories listed . Directory for search (current directory) grep -nr ‘MobileAppSer*’ . (Would find MobileAppServlet.java or MobileAppServlet.class or … Read more