https://saveriomiroddi.github.io/Running-shell-commands-in-parallel-via-gnu-parallel/ https://stackoverflow.com/questions/29953990/run-serial-inside-paralell-bash https://unix.stackexchange.com/questions/531753/running-multiple-jobs-a-combination-of-parallel-and-serial refs https://www.cnblogs.com/x...
Goal: Read commands from pipe line by line, each command occpuying one line. Run these commands in parallel, and output their outputs(stdout and stderr) simutaliously. Technical nutshell: Run bash commands by subprocess Using threads moniterring outputs. CODE: 1#!/usr/bin/env python23'''4...
You can run the following commands to check information about your shell environment. To check the list of installed shells in your operating system run the following command. The list of installed shells may vary according to your operating system. $cat /etc/shells# /etc/shells: valid login ...
Setting a random value for use in subsequent commands Setting and using a random value for use in variables allows you to run scripts multiple times without naming conflicts. Naming conflicts occur because a value must be unique across the service, or because an object you deleted still exists ...
If everything goes well, then you collect your files in parallel because you don’t have more than ten systems. You can afford to ssh to all of them at the same time and then show the hardware details of each one. Visiting: dmaf5 ...
This is mainly useful for executing long-running commands on a remote server, or even on multiple remote servers in parallel. Whether using automation or simply a sequence ofsshcommands, you can log in to a machine, runnohup /path/to/somecommand ∧ log out again. The&puts the command in...
>(commands) Let me go a bit in detail. Bash Process Substitution You'll find the process substitution can be used similar to STDOUT or STDIN redirection. With<(commands)operator, you read from the substitution. This means thatcommandsis set up to use it asstdout. ...
(reboot)]arithmetic expression would run therebootcommand when evaluated). The[builtin requires the operands bedecimalintegers, so it's not affected. But it's critical that$foobe quoted, or you'd still get a command injection vulnerability (for instance with values such as-v a[$(reboot)] ...
hdfs_checksum*.sh - walks an HDFS directory tree and outputs HDFS native checksums (faster) or portable externally comparable CRC32, in serial or in parallel to save time hdfs_find_replication_factor_1.sh / hdfs_set_replication_factor_3.sh - finds HDFS files with replication factor 1 / sets...
hdfs_checksum*.sh - walks an HDFS directory tree and outputs HDFS native checksums (faster) or portable externally comparable CRC32, in serial or in parallel to save time hdfs_find_replication_factor_1.sh / hdfs_set_replication_factor_3.sh - finds HDFS files with replication factor 1 / sets...