configure memory NAME chmem - configure memory SYNOPSIS chmem [ -h] [ -V*] [ -v ] [ -e | -d ] [ SIZE | RANGE -b BLOCKRANGE ] [ -z ZONE ] DESCRIPTION The chmem command sets a partic…call block device ioctls from the command line NAME blockdev - call block device ioctls from the command line SYNOPSIS blockdev [ -q ] [ -v ] command [ command ...] device [ device…mirror/redirect action NAME mirred - mirror/redirect action SYNOPSIS tc ... action mirred DIRECTION ACTION [ index INDEX ] TARGET DIRECTION := { ingress | egress } TARGET := { DEV …set up and control zram devices NAME zramctl - set up and control zram devices SYNOPSIS Get info: zramctl [options] Reset zram: zramctl -r zramdev ... Print name of first unused zr…list local system locks NAME lslocks - list local system locks SYNOPSIS lslocks [options] DESCRIPTION lslocks lists information about all the currently held file locks in a Linux s…discard unused blocks on a mounted filesystem NAME fstrim - discard unused blocks on a mounted filesystem SYNOPSIS fstrim [ -v ] [ -o offset ] [ -l length ] [ -m minimum-size ] -A …set up a Linux swap area NAME mkswap - set up a Linux swap area SYNOPSIS mkswap [options] device [ blocks ] mkswap [options] --size size --file file DESCRIPTION mkswap sets up a Li…Clean up the disk cache NAME htcacheclean - Clean up the disk cache SYNOPSIS htcacheclean [ - D ] [ - v ] [ - t ] [ - r ] [ - n ] [ - R round ] - p path [ - l limit ] [ - L limit ]…output the length of an iso9660 filesystem NAME isosize - output the length of an iso9660 filesystem SYNOPSIS isosize [options] iso9660_image_file DESCRIPTION This command outputs …mount a filesystem NAME mount - mount a filesystem SYNOPSIS mount [ -h | -V ] mount [ -l ] [ -t fstype ] mount -a [ -fFnrsvw ] [ -t fstype ] [ -O optlist ] mount [ -fnrsvw ] [ -o o…discard sectors on a device NAME blkdiscard - discard sectors on a device SYNOPSIS blkdiscard [options] [ -o offset ] [ -l length ] device DESCRIPTION blkdiscard is used to discard…Report virtual memory statistics NAME vmstat - Report virtual memory statistics SYNOPSIS vmstat [options] [ delay [ count ]] DESCRIPTION vmstat reports information about processes,…suspend access to a filesystem (Ext3/4, ReiserFS, JFS, XFS) NAME fsfreeze - suspend access to a filesystem (Ext3/4, ReiserFS, JFS, XFS) SYNOPSIS fsfreeze --freeze | --unfreeze moun…Network Emulator NAME netem - Network Emulator SYNOPSIS tc qdisc ... dev DEVICE ] add netem OPTIONS OPTIONS := [ LIMIT ] [ DELAY ] [ LOSS ] [ CORRUPT ] [ DUPLICATION ] [ REORDERING…show / manipulate traffic control settings NAME tc - show / manipulate traffic control settings SYNOPSIS tc [ OPTIONS ] qdisc [ add | change | replace | link | delete ] dev DEV [ p…Apache Hypertext Transfer Protocol Server NAME apache2 - Apache Hypertext Transfer Protocol Server SYNOPSIS apache2 [ - d serverroot ] [ - f config ] [ - C directive ] [ - c direct…Generator for enabling getty instances on the console NAME systemd-getty-generator - Generator for enabling getty instances on the console SYNOPSIS /usr/lib/systemd/system-generato…HTTP and reverse proxy server, mail proxy server NAME nginx — HTTP and reverse proxy server, mail proxy server SYNOPSIS nginx [ -?hqTtVv ] [ -c file ] [ -e file ] [ -g directives ]…Generator for automatically discovering and mounting root, /home/, /srv/, /var/ and /var/tmp/ partitions, as well as discovering and enabling swap partitions, based on GPT partitio…Apache HTTP server control interface NAME apache2ctl - Apache HTTP server control interface SYNOPSIS When acting in SysV init mode, apache2ctl takes simple, one-word commands, defi…