fork and exec system calls in Linux
fork and exec system calls are used to create new processes to execute programs. fork and exec calls are explained with example programs.
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September 30, 2018
Cut command in Linux
The cut command cuts parts of each line of input files and writes it on its standard output. Used for taking out few columns from the input.
September 30, 2018
tr command in Linux
The tr command reads the standard input, translates or deletes characters and writes the resulting text on its standard output.
September 30, 2018
comm command in Linux
comm compares two sorted files and gives three column output regarding, lines unique to file 1, lines unique to file 2 and the common lines.
September 29, 2018
uniq command in Linux
The uniq command is a filter for finding unique lines in input. It reads input, suppresses duplicates and prints unique lines in its output.
September 29, 2018
sort command in Linux
The sort command is for sorting lines in text files. There are options to define keys, reverse sort order, numeric sort and to merge files.
September 29, 2018
awk Tutorial
Awk is a domain specific programming language, suitable for text processing, data extraction and report generation applications.
September 29, 2018
sed command in Linux
sed is a stream editor that applies the commands one by one on each line of input and writes the resulting lines on the standard output.
September 29, 2018
grep Command in Linux
grep is a program for searching string patterns in files. It searches files for the patterns and prints the matching lines.
September 29, 2018
Shell Scripting Tutorial
A shell script, or bash script, is a list of commands written to automate some system operations work in Linux.
September 29, 2018