How to check the execution progress of commands in CentOS

PV is called Pipe Viewer, with which we can view the progress of command execution.

# wget http://www.ivarch.com/programs/sources/pv-1.5.3.tar.bz2

# tar xjf pv-1.1.4.tar.bz2

# cd pv-1.1.4

# ./configure

# make && make install

Example: I need to package the file in the /home/ftp/vqiu directory with the name vqiu@yy-mm-dd.

# tar -p -cf - /home/ftp/vqiu | pv --size `du -sk /home/ftp/vqiu | cut -f 1`k | gzip >/home/ftp/vqiu@` date %y-%m-%d`.tar.g

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