Bash script to iterate through RCS versions of a file and output each difference

 #!/bin/bash
 
 file=$1
 top_num=10
 
 
 if [[ ! -f ${file} ]]; then
    echo "Need valid file to Check RCS Against"
    exit
 fi
 
 
 revisions=( $(rlog ${file} | grep '^revision' | sed
 's/revision /r/' | cat | awk '{print $1}' | head -n
 ${top_num}) )
 
 echo "number of revisions: " ${#revisions[@]}
 
 for (( i = 0; i < ${#revisions[@]}; i++ )); do
    if [[ ${i} == 0 ]]; then continue; fi
    echo
    echo
    echo
    echo
    echo
    echo "================================================="
    echo "================================================="
    echo "${revisions[${i}-1]} -> ${revisions[${i}]}
    ${file}"
    echo "================================================="
    echo "================================================="
    rcsdiff -zLT -u -${revisions[${i}-1]}
    -${revisions[${i}]} ${file}
 done

You can select, copy and paste the code below #!/bin/bash file=$1 top_num=10 if [[ ! -f ${file} ]]; then echo "Need valid file to Check RCS Against" exit fi revisions=( $(rlog ${file} | grep '^revision' | sed 's/revision /r/' | cat | awk '{print $1}' | head -n ${top_num}) ) echo "number of revisions: " ${#revisions[@]} for (( i = 0; i < ${#revisions[@]}; i++ )); do if [[ ${i} == 0 ]]; then continue; fi echo echo echo echo echo echo "=================================================" echo "=================================================" echo "${revisions[${i}-1]} -> ${revisions[${i}]} ${file}" echo "=================================================" echo "=================================================" rcsdiff -zLT -u -${revisions[${i}-1]} -${revisions[${i}]} ${file} done