Useful Unix Commands Cheat Sheet , Cheat Sheet of Operating Systems

Download Useful Unix Commands Cheat Sheet and more Cheat Sheet Operating Systems in PDF only on Docsity! Useful Unix Commands Cheat Sheet PHYS3061 Introduction to Computer Simulations of Physical Systems (Spring 2018) FILE MANIPULATION ls List directories and files here ls dir List directories and files in a directory ls -a List all files including hidden files ls -lh List including more data in readable format pwd Return path to working directory cd dir Change directory cd .. Go to parent directory cd / Go to root directory cd ~ Go to home directory cd Go to home directory touch file Create en empty file cp file1 file2 Copy file1 to file2 cp -r dir1 dir2 Copy dir1 to dir2 including subdirectories rm file Remove a file rm -r dir Remove a directory and its files mv dir1 dir2 Move or renames a file mkdir dir Make a directory rmdir dir Remove a directory locate file Search a file OTHERS man command Show command usage top Show process activity continuously top -n1 Show process activity once command > file Save STDOUT in a file command >> file Append STDOUT in a file [Tab] Autocomplete or hints icc main.c Compile C code icpc main.cpp Compile C++ code ifort main.f Compile Fortran code TEXT PROCESSING cat file1 file2 > file3 Merge files 1 and 2 into file3 head file Print first lines from a file head -n 5 file Print first 5 lines from a file tail file Print last lines from a file tail -n 5 file Print last 5 lines from a file less file View a file less -N file View file with line numbers less -S file View file, wrap long lines grep ‘pattern’ file Print lines matching a pattern grep -c ‘pattern’ file Count lines matching a pattern cut -f 1,3 file Retrieve data from 1,3 columns in a tab-delimited file sort file Sort lines from a file sort -u file Sort and return unique lines uniq -c file Filter adjacent repeated lines wc file Count lines, words and bytes COMPRESSION tar -cf file.tar dir Group files tar -xf file.tar Ungroup files tar -zcf file.tar.gz dir Group and compress files tar -zxf file.tar.gz Extract and ungroup files REMOTE ACCESS wget url Download a file ssh user@server Connect to a server scp -r local_dir user@server:remote_dir Copy file from local to remote computer scp -r user@server:remote_dir local_dir Copy file from remote to local computer