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<\/a><\/p>\n <\/div>\n<\/div>\n P.S.#!\/bin\/bash ################################################################################ ## Bash script for file or directory compression ## ################################################################################ ## 1. Configuration variables ## $work - Working directory. Lock and log files reside here. ## @MUST have tail slash! @NOT mandatory! ## $srcdir - Directory where the source resides. ## @MUST have tail slash! ## $srcname - Source, file or directory to compress. ## $dest - Destination is where the archive will be placed. ## @MUST have tail slash! ## $archname - Archive file name. ## [ example: "archive_$(date +"[%Y.%m.%d - %H:%M:%S]")" ] ## $logname - Log file name. ## $lockname - Lock file name. ## $checklock - Check for lock file or not. ## If you have condition(s) in which creation of an archive is not ## recommended or fatal (e.g. while creating snapshot, directory must not ## be tempered with in any way) and the process which is running prior to ## archivation (rsnapshot, rsync, rdiff etc.), can create a lock file, ## you must switch this check ON and fill out a name for a lock file, ## to prevent integrity violation. ## [ default: 0 ] { 0 = off, 1 = on } ## $locksleep - How much time to wait until next try (in milliseconds). ## [ default: 600 ] - 10 minutes. ## $lockwait - How many tries before script stop. ## [ default: 12 ] - Retry for 2 hours if $locksleep = 600 ## $debug - Enable debugging or not. ## $printtype - Set output to console and or log file. ## [ default: "l" ] { "cl" = console & log, "l" = log only } ## $timestamp - Timestamp format. ## [ default: "[%Y.%m.%d - %H:%M:%S]" ] ## $TIMEFORMAT - Output format for 'time' command. ## [ default: "%E" ] ## $compressor - Compressor and it's params. ## [ default: "xz -T 4 -9 -c" ] ## $archext - Archive extension, depending on $compressor setting. ## [ default: ".tar.xz" ] ## ## 2. Functions ## tstamp() - Prints timestamp. ## [ example: "$(tstamp "[%Y.%m.%d - %H:%M:%S]")" ] ## [ fallback: "${timestamp}" ] ## bold() - Makes text bold. ## [ example: "$(bold "TEST")" ] ## printout() - Prints messages. ## [ example: printout "Archive file name is: %s\\n" "$(bold $arcname)" ] ## checkconf() - Validates configuration. ## checklock() - Checks for lock file. ## execcomp() - Executes compression and assigns execution time to $exectime. ## size() - Gets object size values. ## @Takes two parameters, object and presentation format ## (h - human readable, b - bytes)! ## [ example: "$(size "$src" "b")" ] ## compratio() - Gets compression ratio. ## @Takes two parameters, source and archive! ## [ example: "$(compratio "$src" "$archive")" ] ## compinf() - Outputs compression info. ## [ example: compinf $src $archive ] ################################################################################ ## =========================== ## ## Set configuration variables ## ## =========================== ## work="\/tmp\/" srcdir="\/tmp\/" srcname="testfile" dest=$work archname=$srcname logname="$srcname.log" lockname="$srcname.lock" checklock=1 locksleep=600 lockwait=12 debug=0 ## Do not change this variables if you don't know how! printtype="l" timestamp="[%Y.%m.%d - %H:%M:%S]" TIMEFORMAT="%E" compressor="xz -T 4 -9 -c" archext=".tar.xz" ## ======================================= ## ## WARNING! Do not modify past this point! ## ## ======================================= ## ## ---------------- ## ## Global variables ## ## ---------------- ## tb=$(tput bold) ## Bold text. tn=$(tput sgr0) ## Normal text. src=$srcdir$srcname ## Full path to source. archivefn=$archname$archext ## Archive file name and extension. archive=$dest$archname$archext ## Full path to archive. logfile=$work$logname ## Full path to log file. lockfile=$work$lockname ## Full path to lock file. confok=0 ## Configuration state. execute=0 ## Allow execution. exectime="" ## Compression execution time. ## ------------- ## ## Initial setup ## ## ------------- ## exec 3>&1 1>>$logfile 2>&1 ## Modifies output. ## --------- ## ## Functions ## ## --------- ## ## Sets timestamp. tstamp() { date +"${timestamp}"; } ## Makes text bold. bold() { echo "$tb$1$tn"; } ## Prints messages. printout() { [[ $printtype == "l" ]] && printf "$@" || (printf "$@" \\ | tee \/dev\/fd\/3); } ## Checks configuration. checkconf() { # exec 2>\/dev\/null pass=0 checkperm() { if [[ ! -n ${2} ]]; then [[ -r ${1} ]] && [[ -w ${1} ]] && echo 1 || echo 0; else case "$2" in "f" ) [[ -f ${1} ]] && [[ -r ${1} ]] && [[ -w ${1} ]] && \\ echo 1 || echo 0;; "d" ) [[ -d ${1} ]] && [[ -r ${1} ]] && [[ -w ${1} ]] && \\ echo 1 || echo 0;; "fd" ) [[ -d ${1} ]] || [[ -f ${1} ]] && [[ -r ${1} ]] && \\ [[ -w ${1} ]] && echo 1 || echo 0;; esac fi } status() { [[ $1 == 1 ]] && echo "$(bold "OK")" || echo "$(bold "NOT OK")"; } ## Check working directory. status=$(status "$(checkperm "$work" "d")") pass=$(( pass+$(checkperm "$work" "d"))) [[ $debug == 1 ]] && printout \\ "\\t-> Working directory is %s and is set to: %s\\n" "$status" "$(bold $work)" ## Check source. status=$(status "$(checkperm "$src" "fd")") pass=$(( pass+$(checkperm "$src" "fd"))) [[ $debug == 1 ]] && printout "\\t-> Source is %s and is set to: %s\\n" \\ "$status" "$(bold $src)" ## Check destination. status=$(status "$(checkperm "$dest" "d")") pass=$(( pass+$(checkperm "$dest" "d"))) [[ $debug == 1 ]] && printout "\\t-> Destination is %s and is set to: %s\\n" \\ "$status" "$(bold $dest)" ## Display rest of the config. [[ $debug == 1 ]] && printout "\\t-> Archive is set to: %s\\n" \\ "$(bold $archivefn)" [[ $debug == 1 ]] && printout "\\t-> Log file is set to: %s\\n" \\ "$(bold $logname)" [[ $debug == 1 ]] && [[ $checklock == 1 ]] && printout \\ "\\t-> Lock file is set to: %s\\n" "$(bold $lockname)" [[ $debug == 1 ]] && printout "\\t-> Timestamp is set to: %s\\n" \\ "$(bold "$timestamp")" [[ $debug == 1 ]] && printout "\\t-> Compressor is set to: %s\\n" \\ "$(bold "$compressor")" ## Validate config if [ $pass == 3 ]; then confok=1; [[ $debug == 1 ]] && printout "%s Configuration is %s!\\n" \\ "$(tstamp)" "$(bold "OK")" else printout "%s Configuration is %s, exiting...\\n" "$(tstamp)" \\ "$(bold "NOT OK")"; exit 1 fi } ## Checks for lock file. checklock() { for ((i=1; i<=$lockwait; i++)); do if [ -f ${lockfile} ]; then [[ $debug == 1 ]] && printout \\ "%s Lock file is in place, waiting... %s\\n" "$(tstamp)" \\ "$(bold "$i")"; sleep $locksleep else i=1000 fi if [ $i == $lockwait ]; then printout "%s Lock file is in place for to long, exiting...\\n\\n" "$(tstamp)" exit 0 fi done } ## Executes compression. execcomp() { cd $srcdir || exit 1 ## Go to archive destination directory. exectime=$( { time tar cf - $srcname | $compressor - > $archive; } 2>&1 ) } ## Gets object size values. size() { [[ $2 == "b" ]] && du -bs "$1" | awk '{ print $1 }' [[ $2 == "h" ]] && du -hs "$1" | awk '{ print $1 }' } ## Gets compression ratio. compratio() { res=$(let res="$1\/$2"; printf "%s" "$res"); printf "%.*f" 2 "$res" } ## Outputs compression info. compinf() { printout "\\t-> Source size: %s (%s bytes)\\n" \\ "$(bold "$(size "$1" "h")")" "$(bold "$(size "$1" "b")")" printout "\\t-> Archive size: %s (%s bytes)\\n" \\ "$(bold "$(size "$2" "h")")" "$(bold "$(size "$2" "b")")" printout "\\t-> Compression ratio: %s\\n" \\ "$(bold "$(compratio "$(size "$1" "b")" "$(size "$2" "b")")")" } ## ---------- ## ## Initialize ## ## ---------- ## printout "%s Initializing...\\n" "$(tstamp)" checkconf ## Check configuration. [[ $checklock == 1 ]] && checklock ## Check for lock file. ## Check if the old archive file exists, if it does, delete it. if [ -f ${archive} ]; then [[ $debug == 1 ]] && printout "%s Old archive exists, deleting...\\n" \\ "$(tstamp)"; rm -f ${archive} if [ ! -f ${archive} ]; then execute=1; [[ $debug == 1 ]] && printout \\ "%s Old archive deleted, proceeding...\\n" "$(tstamp)" else printout "%s %s Can't delete old archive file, exiting...\\n" \\ "$(tstamp)" "$(bold "WARNING!")"; exit 1 fi else execute=1; [[ $debug == 1 ]] && printout \\ "%s Old archive does not exist, proceeding...\\n" "$(tstamp)" fi ## Begin compression. if [ $execute == 1 ]; then [[ $debug == 1 ]] && printout "%s Flag is set, executing...\\n" \\ "$(tstamp)"; execcomp ## Check if archive file created. if [ -f ${archive} ]; then printout "%s Archive %s created in %s!\\n" "$(tstamp)" "$(bold $archive)" \\ "$(bold ${exectime})" compinf $src $archive # printout "%s Process has completed successfully!\\n" "$(tstamp)" else printout "%s %s Archive file was NOT created, exiting...\\n" \\ "$(tstamp)" "$(bold "WARNING!")"; exit 1 fi else printout "%s Flag is NOT set, exiting...\\n" "$(tstamp)"; exit 1 fi printout "\\n"; exit 0 <\/code><\/pre>\n
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