All UNIX commands for SDET and Manual tester Part-2

Search Commands
grep x file	searches for x in file
grep -i	case insens-itive search
grep -r	recursive search
grep -v	inverted search
grep -o	shows only matched part of the file
find /dir/ -name aaa *	finds files starting with aaa in dir
find /dir/ -user Tom	finds files owned by Tom in dir
find /dir/ -mmin 10	finds files modifed less than 10 minutes ago in dir
find /home -size +500M	finds files larger than 500MB in /xyz
find [/folder/location] -name [x]	finds file names starting with character x
whereis aaa	ocates the binary, source, and manual page of aaa
locate abc	finds the location of abc quickly
Process Management Commands
ps	displays currently running processes
ps PID	gives the status of a particular process
pidof	gives the process ID of a process
ps -ef	displays all running processes on the system
ps -ef | grep xyz	displays process information for xyz
top	displays and manages the top processes
htop	interactive process viewer (top alternative)
kill pid	kills process with process ID of pid
pkill xyz	kills process with name xyz
killall abc	kills all processes named abc
program &	starts program in the background
bg	lists and resumes stopped jobs in the background
fg	brings the most recent background job to foreground.
fg x	brings job x to the foreground
nice	starts a process with a given priority
renice	changes priority of an already running process
pstree	displays processes in a tree-like diagram
pmap	displays a memory usage map of processes
lsof	lists files opened by running processes

 

Search Commands
command -h / command –help	to review all available options of the “command”
info command	to find info documents about the “command”
whatis command	displays a single line description about the”command”
$ man UNIXCOMMAND	to view detailed man page of the “command”
apropos	used to search man pages for available commands on a specific
File Transfer Commands
scp file.txt server:/tmp	secure copy file.txt to the /tmp folder on server
scp server:/var/www/*.html /tmp	secure copy *.html files in /var/www/ directory on server to
scp -r server:/var/www /tmp	secure copy all files and directories recursively from server to the
rsync -a /home /backups/	synchronize /home to /backups/
rsync -avz /home server:/backups/	Synchronize files/directories between the local and remote
Disk Usage Commands
df	shows free hard disk space on the system
df -h	shows free and used space on mounted filesystems
df -i	shows free and used inodes on mounted filesystems
fdisk -l	shows free and used inodes on mounted filesystems
du -sh	shows total disk usage off the current directory
du -ah	shows disk usage for all files and directories in readable format
free	shows free RAM on the system
free -h	shows free and used memory
findmnt	shows target mount point for all filesystem
mount /xyz /abc	mounts a device in /xyz to /abc
Compress and Decompress Commands
gzip abc	compresses abc file using gzip.
bzip2 abc	compresses abc file using bzip2
tar -czvf archive.tar.gz /home/temp2/	compresses a full directory with all subdirectories
gzip -d xyz.gz	extracts xyz.gz with gzip utility
gunzip xyz.gz	extracts xyz.gz with gzip utility
bzip2 -d file.php.bz2	extracts xyz.gz with bzip2 utility
bunzip2 file.php.bz2	extracts xyz.gz with bzip2 utility
unzip xyz.zip	extracts xyz.zip with zip utility
gunzip -c output.txt.gz	to view the contents of both files without extracting
tar cf archive.tar directory	creates tar named archive.tar containing directory
tar xf archive.tar	extracts the contents from archive.tar
tar czf archive.tar.gz directory	creates a gzip compressed tar file name archive.tar.gz
tar xzf archive.tar.gz	extracts a gzip compressed tar file
tar cjf archive.tar.bz2 directory	creates a tar file with bzip2 compression
tar xjf archive.tar.bz2	extracts a bzip2 compressed tar file

 

All UNIX commands for SDET and Manual tester Part-3