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.
mv $filname $(echo $filename | sed -e ‘s/…..\.moc1$//’); or echo ${filename%%?????.moc1}.moc1 %% is a bash internal operator…
The C99 standard (and the C89 standard before that) said unequivocally: One character of pushback is guaranteed. If the ungetc function is called too many times on the same stream without an intervening read or file positioning operation on that stream, the operation may fail. So, to be portable, you do not assume more than … Read more
One option would be to open the plink session in a WScript.Shell instead of executing it with a script file using VBA’s Shell. The plink program will run in interactive mode from the command line, and the WshExec object gives you direct access to the standard input and standard output streams of the process that … Read more
From the man page for longjmp: POSIX does not specify whether longjmp() will restore the signal context. If you want to save and restore signal masks, use siglongjmp() Your second question: Yes, the function will return -2 because longjmp() will cause it to go to the setjmp(buffer) part, but the timing will have to be … Read more
The count from uniq is preceded by spaces unless there are more than 7 digits in the count, so you need to do something like: uniq -c | sort -nr | cut -c 9- to get columns (character positions) 9 upwards. Or you can use sed: uniq -c | sort -nr | sed ‘s/^.\{8\}//’ or: … Read more
The POSIX standard (IEEE 1003.1:2008) prototypes open() as: int open(const char *path, int oflag, …); The section describing the behaviour of O_CREAT doesn’t say what will happen if you omit the necessary third argument, which means the behaviour is undefined – anything is possible. In practice, the use of part of the stack that was … Read more
You can use wait to wait for all the background processes started by userscript to complete. Since wait only works on children of the current shell, you’ll need to source their script instead of running it as a separate process. ( source userscript; wait ) Sourcing the script in an explicit subshell should simulate starting … Read more
For executing multiple commands in sequence, you can create a command string like below: String script =”pbrun su – user; cd /home/scripts;./sample_script.sh” Execute it and pass this string to your method above.
The POSIX answer is tcflush(): flush non-transmitted output data, non-read input data, or both. There is also tcdrain() which waits for output to be transmitted. They’ve been in POSIX since there was a POSIX standard (1988 for the trial-use version), though I don’t recall ever using them directly. Example program Compile this code so the … Read more