cp

cp

Copy one or more files to another location. Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY. Syntax cp [options]... Source Dest cp [options]... Source... Directory Key -a, --archive same as -dpR -b, --backup make backup before removal -d, --no-dereference … Continued
cpio

cpio

Copy files to and from archives.The following archive formats are supported: binary, old ASCII, new ASCII, crc, HPUX binary, HPUX old ASCII, old tar, and POSIX.1 tar. The tar format is provided for compatibility with the tar program. By default, … Continued
cron

cron

daemon to execute scheduled commands Syntax cron [-n | -p | -s | -m<mailcommand>] cron -x [ext,sch,proc,pars,load,misc,test,bit] Key -s This option will direct cron to send job output to the system log using syslog(3). This is useful if your system … Continued
crontab

crontab

Schedule a command to run at a later time. Syntax crontab [ -u user ] file crontab [ -u user ] { -l | -r | -e } Key -l List - display the current crontab entries. -r Remove the … Continued
csplit

csplit

Split a file into context-determined pieces. Syntax csplit [options]... FILE PATTERN... Output pieces of FILE separated by PATTERN(s) to files ‘xx00’, ‘xx01’, …, and output byte counts of each piece to standard output. (standard input if FILE is – ). Options -f PREFIX --prefix=PREFIX … Continued
curl

curl

Transfer data from or to a server, using one of the protocols: HTTP, HTTPS, FTP, FTPS, SCP, SFTP, TFTP, DICT, TELNET, LDAP or FILE. (To transfer multiple files use wget or FTP.) Syntax curl [options] [URL...] Key url One or … Continued
cut

cut

Divide a file into several parts (columns) Writes to standard output selected parts of each line of each input file, or standard input if no files are given or for a file name of `-‘. Syntax cut [OPTION]... [FILE]... In … Continued
date

date

Display or change the date. Syntax date [option]... [+Format] date [option] [MMDDhhmm[[CC]YY][.ss]] ‘date’ with no arguments prints the current time and date, in the format of the %c directive (described below). If given an argument that starts with a +, date prints the current time … Continued
dc

dc

Desk calculator SYNTAX dc <options> OPTIONS -e EXPR --expression=EXPR Evaluate EXPR as DC commands. -f FILE --file=FILE Read and evaluate DC commands from FILE. -h --help Print a usage message summarizing the command-line options, then exit. -V --version Print the … Continued
dd

dd

Data Duplicator, convert and copy a file, write disk headers, boot records, create a boot floppy. dd can make an exact clone of an (unmounted) disk, this will include all blank space so the output destination must be at least … Continued