#!/bin/bash for i in 12345 do echo"Welcome $i times" done #!/bin/bash for i in $(seq 115) do echo"Welcome $i times" done #!/bin/bash for i in {1..5} do echo"Welcome $i times" done #!/bin/bash for(( c=1; c<=5; c++)) do echo"Welcome $c times" done #!/bin/bash for i in $( ls );do echo item: $i done #!/bin/bash for i in `seq 110`; do echo$i done #!/bin/bash for file in /etc/* do if [ "${file}"=="/etc/resolv.conf" ] then countNameservers=$(grep -c nameserver /etc/resolv.conf) echo"Total ${countNameservers} nameservers defined in ${file}" break fi done #!/bin/bash FILES="$@" for f in $FILES do #if.bak backup file exists, read next file if [ -f ${f}.bak ] then echo"Skiping $f file" continue # read next file and skip cp command fi # we are hear means no backup file exists, just use cp command to copy file /bin/cp $f $f.bak done #!/bin/bash COUNTER=0 while [ $COUNTER -lt 10 ];do echo The counter is $COUNTER let COUNTER=COUNTER+1 done #!/bin/bash COUNTER=20 until [ $COUNTER -lt 10 ];do echo COUNTER $COUNTER let COUNTER-=1 done
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