Linux & Shell interview questions

1. A.a shell operator that sends one command's output as the next command's input
2. B.an asynchronous notification like SIGTERM sent to a process to request an action
3. C.the kernel mechanism that terminates processes when the system runs out of memory
4. D.a running instance of a program with its own memory and PID

Answer + AI explanation with Pro

1. A.Process
2. B.Environment variable
3. C.systemd unit
4. D.Namespace (Linux)

Answer + AI explanation with Pro

1. A.Process — a running instance of a program with its own memory and PID
2. B.Process — a configuration describing a service or resource managed by systemd
3. C.Process — a metric showing the average number of processes waiting to run over time
4. D.Process — a task scheduled to run at fixed times by the cron daemon

Answer + AI explanation with Pro

1. A.a configuration describing a service or resource managed by systemd
2. B.the kernel mechanism that terminates processes when the system runs out of memory
3. C.a number a process returns where 0 means success and non-zero indicates an error
4. D.a kernel feature isolating processes' view of resources like PIDs and networks

Answer + AI explanation with Pro

1. A.cgroup
2. B.OOM killer
3. C.systemd unit
4. D.Pipe

Answer + AI explanation with Pro

1. A.systemd unit — a named value in a shell session inherited by child processes
2. B.systemd unit — a kernel feature isolating processes' view of resources like PIDs and networks
3. C.systemd unit — a metric showing the average number of processes waiting to run over time
4. D.systemd unit — a configuration describing a service or resource managed by systemd

Answer + AI explanation with Pro

1. A.an asynchronous notification like SIGTERM sent to a process to request an action
2. B.a kernel feature isolating processes' view of resources like PIDs and networks
3. C.the read, write, and execute bits controlling access for owner, group, and others
4. D.a task scheduled to run at fixed times by the cron daemon

Answer + AI explanation with Pro

1. A.Environment variable
2. B.systemd unit
3. C.File permissions
4. D.cgroup

Answer + AI explanation with Pro

1. A.File permissions — the read, write, and execute bits controlling access for owner, group, and others
2. B.File permissions — a metric showing the average number of processes waiting to run over time
3. C.File permissions — a named value in a shell session inherited by child processes
4. D.File permissions — a shell operator that sends one command's output as the next command's input

Answer + AI explanation with Pro

1. A.a kernel feature isolating processes' view of resources like PIDs and networks
2. B.a named value in a shell session inherited by child processes
3. C.a file that points to another file or directory path
4. D.a metric showing the average number of processes waiting to run over time

Answer + AI explanation with Pro

1. A.Environment variable
2. B.systemd unit
3. C.Load average
4. D.Pipe

Answer + AI explanation with Pro

1. A.Environment variable — a task scheduled to run at fixed times by the cron daemon
2. B.Environment variable — a kernel feature limiting and isolating resource usage of process groups
3. C.Environment variable — a shell operator that sends one command's output as the next command's input
4. D.Environment variable — a named value in a shell session inherited by child processes

Answer + AI explanation with Pro

1. A.the kernel mechanism that terminates processes when the system runs out of memory
2. B.a task scheduled to run at fixed times by the cron daemon
3. C.a metric showing the average number of processes waiting to run over time
4. D.a kernel feature limiting and isolating resource usage of process groups

Answer + AI explanation with Pro

1. A.Environment variable
2. B.Cron job
3. C.Exit code
4. D.systemd unit

Answer + AI explanation with Pro

1. A.Cron job — a file that points to another file or directory path
2. B.Cron job — a running instance of a program with its own memory and PID
3. C.Cron job — a task scheduled to run at fixed times by the cron daemon
4. D.Cron job — a named value in a shell session inherited by child processes

Answer + AI explanation with Pro

1. A.a metric showing the average number of processes waiting to run over time
2. B.a shell operator that sends one command's output as the next command's input
3. C.a number a process returns where 0 means success and non-zero indicates an error
4. D.an asynchronous notification like SIGTERM sent to a process to request an action

Answer + AI explanation with Pro

1. A.Process
2. B.systemd unit
3. C.Pipe
4. D.Load average

Answer + AI explanation with Pro

1. A.Pipe — a configuration describing a service or resource managed by systemd
2. B.Pipe — a running instance of a program with its own memory and PID
3. C.Pipe — a shell operator that sends one command's output as the next command's input
4. D.Pipe — an asynchronous notification like SIGTERM sent to a process to request an action

Answer + AI explanation with Pro

1. A.a number a process returns where 0 means success and non-zero indicates an error
2. B.a named value in a shell session inherited by child processes
3. C.the read, write, and execute bits controlling access for owner, group, and others
4. D.a file that points to another file or directory path

Answer + AI explanation with Pro

1. A.Exit code
2. B.Symlink
3. C.OOM killer
4. D.File permissions

Answer + AI explanation with Pro

1. A.Exit code — a task scheduled to run at fixed times by the cron daemon
2. B.Exit code — the read, write, and execute bits controlling access for owner, group, and others
3. C.Exit code — a number a process returns where 0 means success and non-zero indicates an error
4. D.Exit code — the kernel mechanism that terminates processes when the system runs out of memory

Answer + AI explanation with Pro

1. A.a shell operator that sends one command's output as the next command's input
2. B.a named value in a shell session inherited by child processes
3. C.a task scheduled to run at fixed times by the cron daemon
4. D.an asynchronous notification like SIGTERM sent to a process to request an action

Answer + AI explanation with Pro

1. A.Signal
2. B.Environment variable
3. C.OOM killer
4. D.systemd unit

Answer + AI explanation with Pro

1. A.Signal — a running instance of a program with its own memory and PID
2. B.Signal — a configuration describing a service or resource managed by systemd
3. C.Signal — a kernel feature limiting and isolating resource usage of process groups
4. D.Signal — an asynchronous notification like SIGTERM sent to a process to request an action

Answer + AI explanation with Pro

1. A.a task scheduled to run at fixed times by the cron daemon
2. B.a shell operator that sends one command's output as the next command's input
3. C.the kernel mechanism that terminates processes when the system runs out of memory
4. D.a file that points to another file or directory path

Answer + AI explanation with Pro

1. A.Symlink
2. B.Exit code
3. C.File permissions
4. D.Load average

Answer + AI explanation with Pro

1. A.Symlink — a file that points to another file or directory path
2. B.Symlink — a shell operator that sends one command's output as the next command's input
3. C.Symlink — an asynchronous notification like SIGTERM sent to a process to request an action
4. D.Symlink — the read, write, and execute bits controlling access for owner, group, and others

Answer + AI explanation with Pro

1. A.a named value in a shell session inherited by child processes
2. B.a file that points to another file or directory path
3. C.a shell operator that sends one command's output as the next command's input
4. D.a metric showing the average number of processes waiting to run over time

Answer + AI explanation with Pro

1. A.Environment variable
2. B.File permissions
3. C.Exit code
4. D.Load average

Answer + AI explanation with Pro

1. A.Load average — a file that points to another file or directory path
2. B.Load average — a task scheduled to run at fixed times by the cron daemon
3. C.Load average — a metric showing the average number of processes waiting to run over time
4. D.Load average — a kernel feature limiting and isolating resource usage of process groups

Answer + AI explanation with Pro