This fuser 8080/tcp will print you PID of process bound on that port. And this fuser -k 8080/tcp will kill that process. Works on Linux only. More universal is use of lsof -i4 (or 6 for IPv6).
Run this query from PostgreSQL: SELECT version();
Use wc: wc -l <filename> This will output the number of lines in <filename>: $ wc -l /dir/file.txt 3272485 /dir/file.txt Or, to omit the <filename> from the result use wc -l < <filename>: $ wc -l < /dir/file.txt 3272485 You can also pipe data to wc as well: $ cat /dir/file.txt | wc -l 3272485 … Read more
The standard option grep -l (that is a lowercase L) could do this. From the Unix standard: -l (The letter ell.) Write only the names of files containing selected lines to standard output. Pathnames are written once per file searched. If the standard input is searched, a pathname of (standard input) will be written, in … Read more
The option you’re looking for is -R. cp -R path_to_source path_to_destination/ If destination doesn’t exist, it will be created. -R means copy directories recursively. You can also use -r since it’s case-insensitive. To copy everything inside the source folder (symlinks, hidden files) without copying the source folder itself use -a flag along with trailing /. … Read more
The command you want is named tee: foo | tee output.file For example, if you only care about stdout: ls -a | tee output.file If you want to include stderr, do: program [arguments…] 2>&1 | tee outfile 2>&1 redirects channel 2 (stderr/standard error) into channel 1 (stdout/standard output), such that both is written as stdout. … Read more
Considering that pdfunite is part of poppler it has a higher chance to be installed, usage is also simpler than pdftk: pdfunite in-1.pdf in-2.pdf in-n.pdf out.pdf Just make sure you remember to provide out.pdf, or else it will overwrite the last file in your command
The simplest and most widely available method to get user input at a shell prompt is the read command. The best way to illustrate its use is a simple demonstration: while true; do read -p “Do you wish to install this program? ” yn case $yn in [Yy]* ) make install; break;; [Nn]* ) exit;; … Read more
One way to do it is: while read p; do echo “$p” done <peptides.txt As pointed out in the comments, this has the side effects of trimming leading whitespace, interpreting backslash sequences, and skipping the last line if it’s missing a terminating linefeed. If these are concerns, you can do: while IFS=”” read -r p … Read more
If -prune doesn’t work for you, this will: find -name “*.js” -not -path “./directory/*” Caveat: requires traversing all of the unwanted directories.