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touch command in Linux/Unix touch –help touch –version touch abc.txt touch 123.c def.txt 123.txt hello.html touch file{1..5} touch 987{a..e} touch -a abc.txt touch -m abc.txt touch -t YYMMDDHHMM filename   touch -t 1905290815 abc.txt touch -d yesterday abc.txt touch -am abc.txt touch -r abc.txt 123.txt

bc –help bc –version bc echo “5+5” | bc echo “5*5” | bc echo “5^2” | bc x=`echo “5*5” | bc` echo $x

pwd –help   pwd pwd -L pwd -P echo $PWD       pwd pwd -L pwd -P  

bzip2 command in Linux/Unix The bzip2 command in Linux is used for compressing and decompressing files. It is like gzip command but takes a little more time to compress but compresses better. It uses the Burrows-Wheeler block-sorting text compression algorithm and Huffman coding. bzip2 command creates a compressed file with the extension “.bz2”. Syntax for

basename –help basname /etc/apt/apt.conf.d basname /etc/apt/apt.conf.d/ basename -a /etc/apt/apt.conf.d /etc/apt/keyrings basename /etc/apt/sources.list .list basename /etc/apt/sources.list s.list basename /etc/apt/sources.list sources.list basename -s .list /etc/apt/sources.list basename -s s.list /etc/apt/sources.list basename -s sources.list /etc/apt/sources.list basename -a -s .d /etc/apt/sources.list.d /etc/apt/trusted.gpg.d /etc/apt/preferences.d  

mkdir (stands for make directory) command in Linux is used for creating the directory (folder). It can be used to create single or multiple folders at once and can also set up complex folder hierarchies. In this tutorial you will learn about mkdir command in Linux and uses of mkdir command with examples. Syntax for