C

c2ph:- c2ph, pstruct - Dump C structures as generated from "cc -g -S" stabs

c89:-

c99:- The c99 utility is an interface to the standard C  compilation  system; it  shall accept source code conforming to the ISO C standard.

cacertdir_rehash:- cacertdir_rehash is a simple shell script that is called by  authconfig and authconfig-gtk. It uses openssl command line utility to create hash symbolic links of certificate files in the specified directory.

cache_check:-  cache_check - repair cache metadata on device or file

cache_dump:- cache_dump - dump cache metadata from device or file to standard output

cache_metadata_size:-

cache_repair:- reads binary cache  metadata  created  by  the  respective device-mapper target from one device or file , repairs it and writes it to another device or file.

cache_restore:- restore cache metadata file to device or file

cairo-sphinx:-

cal:- displays  a  simple  calendar.  If no arguments are specified, the current month is displayed.

caller:-

capsh:- Linux  capability  support and use can be explored and constrained with this tool.

captoinfo:- convert a termcap description into a terminfo description

case:-

cat:- concatenate files and print on the standard output

catchsegv:-

catman:- create or update the pre-formatted manual pages

cbq:- Class Based Queueing

cc:-

cd:-

centrino-decode:-

certutil:- certutil - Manage keys and certificate in both NSS databases and other NSS tokens

cfdisk:- display or manipulate disk partition table                     Ex:- cfdisk

c++filt:- Demangle C++ and Java symbols.

chacl:- change the access control list of a file or directory

chage:- change user password expiry information

chat:- Automated conversational script with a modem

chattr:- change file attributes on a Linux file system

chcon:- change file SELinux security context

chcpu:- can  modify  the  state of CPUs.  It can enable or disable CPUs, scan for new CPUs, change the CPU dispatching mode of the underlying hypervisor, and request  CPUs  from  the hypervisor (configure) or return CPUs to the hypervisor (deconfigure).

chfn:- change your finger information

chgrp:- change group ownership

chkconfig:- updates and queries runlevel information for system services

chmod:- change file mode bits

chown:- change file owner and group

chpasswd:- update passwords in batch mode

chronyc:- command-line interface for chronyd

chronyd:- chrony is a pair of programs for maintaining the accuracy of computer clocks. chronyd is a

       background daemon program that can be started at boot time.

chroot:- run command or interactive shell with special root directory

chrt:- manipulate the real-time attributes of a process

chsh:- is  used  to  change your login shell.  If a shell is not given on the command line, chsh prompts for one.

chvt:- change foreground virtual terminal

cifsiostat:-  The cifsiostat command displays statistics about read and write operations on CIFS filesystems.

cksum:- Print CRC checksum and byte counts of each FILE.

clear:- clear the terminal screen

clock:- hwclock  is  a  tool for accessing the Hardware Clock.  You can display the current time, set the Hardware Clock to a specified time, set the Hardware Clock from the System Time, or set the System Time from the Hardware Clock.

clockdiff:- measure clock difference between hosts

cmp:- compare two files byte by byte

cmsutil:- Performs basic cryptograpic operations, such as encryption and decryption, on Cryptographic Message Syntax (CMS) messages.

col:- filter reverse line feeds from input

colcrt:- provides  virtual  half-line and reverse line feed sequences for terminals without such capability, and on which overstriking is destructive.

colrm:- remove columns from a file

column:- The  column utility formats its input into multiple columns.  Rows are filled before columns.  Input is taken from file or, by default, from standard input. Empty lines are ignored.

comm:- compare two sorted files line by line

command:-

compgen:-

complete:-

compopt:-

consolehelper:- A wrapper that helps console users run system programs

consolehelper-gtk:- A helper program for consolehelper

consoletype:- print type of the console connected to standard input

continue:-

convertquota:- convert quota from old file format to new one.

coproc:-

cp:- copy files and directories.

cpio:- copy files to and from archives.

cpp:- The C Preprocessor

cpupower:- Shows and sets processor power related values

cracklib-check:- Check passwords using libcrack2.

cracklib-format:- cracklib-format takes a list of text files each containing a list of words, one per line, It lowercases all words, removes control characters, and sorts the lists.

cracklib-packer:- cracklib-format takes a list of text files each containing a list of words, one per line, It lowercases all words, removes control characters, and sorts the lists.

cracklib-unpacker:- cracklib-format takes a list of text files each containing a list of words, one per line, It lowercases all words, removes control characters, and sorts the lists.

crda:- send to the kernel a wireless regulatory domain for a given ISO / IEC 3166 alpha2

create-cracklib-dict:- takes one or more word list files as arguments and converts them into cracklib dictionaries for use by password checking programs.

crlutil:- List, generate, modify, or delete CRLs within the NSS security database file(s) and list, create, modify or delete certificates entries in a particular CRL.

crond:- daemon to execute scheduled commands

crontab:- maintains crontab files for individual users

cryptsetup:- manage plain dm-crypt and LUKS encrypted volumes

csh:- C shell with file name completion and command line editing

csplit:- split a file into sections determined by context lines

csslint-0.6:-

ctrlaltdel:- set the function of the Ctrl-Alt-Del combination

ctstat:- unified linux network statistics

curl:- transfer a URL

cut:- remove sections from each line of files.