% (sh myscript.sh 3>&2 2>&1 1>&3) 2>/dev/null I’m stderr % (sh myscript.sh 3>&2 2>&1 1>&3) >/dev/null I’m stdout Explanation of 3>&2 2>&1 1>&3: 3>&2 means make a copy of file descriptor 2 (fd 2) (stderr), named fd 3 (file descriptor 3). It copies the file descriptor, it doesn’t duplicate the stream as tee does. 2>&1 … Read more
Without any extra package: strings < file.pdf | sed -n ‘s|.*/Count -\{0,1\}\([0-9]\{1,\}\).*|\1|p’ \ | sort -rn | head -n 1 Using pdfinfo: pdfinfo file.pdf | awk ‘/^Pages:/ {print $2}’ Using pdftk: pdftk file.pdf dump_data | grep NumberOfPages | awk ‘{print $2}’ You can also recursively sum the total number of pages in all PDFs via … Read more
It’s a(n insecure) remote shell introduced by the target. That’s the opposite of a “normal” remote shell, that is introduced by the source. Let’s try it with localhost instead of 10.0.0.1: Open two tabs in your terminal. open TCP port 8080 and wait for a connection: nc localhost -lp 8080 Open an interactive shell, and … Read more
Another way to do it in AWK: awk ‘/PATTERN/ {for(i=1; i<=5; i++) {getline; print}}’ inputfile in sed: sed -n ‘/PATTERN/{n;p;n;p;n;p;n;p;n;p}’ inputfile in GNU sed: sed -n ‘/PATTERN/,+7p’ inputfile or sed -n ‘1{x;s/.*/####/;x};/PATTERN/{:a;n;p;x;s/.//;ta;q}’ inputfile The # characters represent a counter. Use one fewer than the number of lines you want to output.
Here’s a way to do it, it is a hack/workaround but it works pretty good. Feel free to tweak it to your needs, it certainly needs some checks on the symbolic link creation or using a tmp folder to avoid possible race conditions (if they are problematic in your case). Demonstration wrapper #!/bin/bash script=”./dummy” newname=”./killme” … Read more
Try: find /directory -name “*pattern*” -exec sh -c ‘cut -f8 {} > {}.txt’ \; But be aware that some versions of find require {} to be a distinct argument, and will not expand {} to a filename otherwise. You can work around that with: find /directory -name “*pattern*” -exec sh -c ‘cut -f8 $0 > … Read more
No there isn’t. You need another command like echo -n, printf or tr. You could put a script somewhere in your PATH (eg. /usr/bin/) and make it executable with chmod +x /usr/bin/mydate script: #!/bin/sh echo -n `date +”[%m-%d %H:%M:%S]”` or use an alias. alias mydate=”echo -n `date +”[%m-%d %H:%M:%S]”`”
To remove newlines, use tr: tr -d ‘\n’ If you want to replace each newline with a single space: tr ‘\n’ ‘ ‘ The error ba: Event not found is coming from csh, and is due to csh trying to match !ba in your history list. You can escape the ! and write the command: … Read more
You can get the default gateway using ip command like this: IP=$(/sbin/ip route | awk ‘/default/ { print $3 }’) echo $IP