B

badblocks:- is used to search for bad blocks on a device (usually a  disk partition).
base64:- base64 encode/decode data and print to standard output
basename:- strip directory and suffix from filenames
bash:- is  an  sh-compatible  command language interpreter that executes commands read from the standard input or from a file.
bashbug:- report a bug in bash
bashbug-64:- report a bug in bash
batch:- at,  batch,  atq, atrm - queue, examine or delete jobs for later execution
bc:- An arbitrary precision calculator language
bg:-
bind:-
biosdecode:- BIOS information decoder
biosdevname:- give BIOS-given name of a device
blkdeactivate:- utility to deactivate block devices
blkdiscard:- discard sectors on a device
blkid:- locate/print block device attributes
blkiomon:- monitor block device I/O based o blktrace data
blkmapd:- daemon performs device discovery and mapping for the parallel NFS (pNFS) block layout client [RFC5663].
blkparse:- produce formatted output of event streams of block devices
blkrawverify:- verifies an output file produced by blkparse
blktrace:- generate traces of the i/o traffic on block devices
blockdev:- call block device ioctls from the command line
bno_plot.py:-
bond2team:- Converts bonding configuration to team
bootctl:-
brandbot:-
brctl:- ethernet bridge administration
break:-
bridge:- show / manipulate bridge addresses and devices
btrace:- perform live tracing for block devices
btrecord:- recreate IO loads recorded by blktrace
btreplay:- recreate IO loads recorded by blktrace
btrfs:- is used to control the filesystem and the files and directories stored.
btrfsck:- check or repair a btrfs filesystem offline
btrfs-convert:- convert from ext2/3/4 filesystem to btrfs or rollback
btrfs-debug-tree:- dump btrfs filesystem metadata into stdout
btrfs-find-root:- is used to find the satisfied root, you can filter by root tree’s objectid, generation, level.
btrfs-image:- is used to create an image of a btrfs filesystem. All data will be zeroed, but metadata and the like is preserved.
btrfs-map-logical:- can be used to find out what the physical offsets are on the mirrors, the result is dumped into stdout in default.
btrfs-show-super:- is used to print the information of superblock, you can specify which mirror to print out.
btrfstune:- is used to tune various btrfs filesystem parameters,you can enable/disable some extended features for btrfs.
btrfs-zero-log:- will remove the log tree if log tree is corrupt, which will allow you to mount the filesystem again.
btt:- analyse block i/o traces produces by blktrace
build-locale-archive:-
builtin:-
bunzip2:-     bzip2, bunzip2 - a block-sorting file compressor, v1.0.6
                    bzcat - decompresses files to stdout
                    bzip2recover - recovers data from damaged bzip2 files
bzcat:-          bzip2, bunzip2 - a block-sorting file compressor, v1.0.6
                    bzcat - decompresses files to stdout
                    bzip2recover - recovers data from damaged bzip2 files
bzcmp:- Bzcmp  and  bzdiff  are  used  to invoke the cmp or the diff program on bzip2 compressed files.
bzdiff:- Bzcmp  and  bzdiff  are  used  to invoke the cmp or the diff program on bzip2 compressed files.
bzgrep:- bzgrep, bzfgrep, bzegrep - search possibly bzip2 compressed files for a regular expression
bzip2:-         bzip2, bunzip2 - a block-sorting file compressor, v1.0.6
                    bzcat - decompresses files to stdout
                    bzip2recover - recovers data from damaged bzip2 files
bzip2recover:- bzip2  compresses  files  using  the Burrows-Wheeler block sorting text compression algorithm, and Huffman coding.
bzless:- bzmore,  bzless  -  file  perusal  filter for crt viewing of bzip2 compressed text
bzmore:- bzmore,  bzless  -  file  perusal  filter for crt viewing of bzip2 compressed text
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