{"id":2221,"date":"2017-12-08T05:06:58","date_gmt":"2017-12-08T05:06:58","guid":{"rendered":"http:\/\/www.scmgalaxy.com\/tutorials\/?p=2221"},"modified":"2021-02-27T09:29:14","modified_gmt":"2021-02-27T09:29:14","slug":"string-manipulation-exercise","status":"publish","type":"post","link":"https:\/\/www.scmgalaxy.com\/tutorials\/string-manipulation-exercise\/","title":{"rendered":"String manipulation exercise"},"content":{"rendered":"

mnanjala created the topic: String manipulation exercise<\/strong><\/p>\n

Hi Guys,<\/p>\n

Say there is a text file inject.dat, it has 5 entries as below
\nPKGNAME=Project-debug
\nOLD_VERSION=1.0.0
\nNEW_VERSION=1.0.1
\nPRODUCT NUMBER=1
\nRELASE DATE=11\/11\/2011<\/p>\n

How we could write shell script so I can read each line replace everything after “=”sign, with new value, example run
\n.\/inject.sh $PKGNAME $OLD_VERSION $NEW_VERSION $PRODUCT_NUMBER $RELEASE_DATE , so it should update the inject.dat with newer value what ever I give as parameter? Any idea?<\/p>\n

Hint getopts.<\/p>\n

rajeshkumar replied the topic: Re: String manipulation exercise<\/strong>
\nHi praveen,<\/p>\n

getopts is the best way to implement. I could not get much time to look into it. However, please find my quick code to implement the same. Please change the file name as needed. if time permits, tomorrow i will tell you more better way.<\/p>\n

for line in $(< raj.txt) \ndo\n if [ $# -eq 5 ]\n then\n case $line in \n PKGNAME=$1) eval $line ;; \n OLD_VERSION=$2) eval $line ;;\n NEW_VERSION=$3) eval $line ;;\n PRODUCT_NUMBER=$4) eval $line ;;\n RELASE_DATE=$5) eval $line ;;\n *) ;; \n esac\n fi\ndone\n \n \necho PKGNAME=$1 >> temp.txt
\necho OLD_VERSION=$2 >> temp.txt
\necho NEW_VERSION=$3 >> temp.txt
\necho PRODUCT_NUMBER=$4 >> temp.txt
\necho RELASE_DATE=$5 >> temp.txt<\/p>\n

mv temp.txt raj2.txt<\/code><\/p>\n

Regards,
\nRajesh Kumar
\nTwitt me @ twitter.com\/RajeshKumarIn<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

mnanjala created the topic: String manipulation exercise Hi Guys, Say there is a text file inject.dat, it has 5 entries […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[454],"tags":[466],"class_list":["post-2221","post","type-post","status-publish","format-standard","hentry","category-shell-script","tag-string"],"yoast_head":"\nString manipulation exercise - scmGalaxy<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.scmgalaxy.com\/tutorials\/string-manipulation-exercise\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"String manipulation exercise - scmGalaxy\" \/>\n<meta property=\"og:description\" content=\"mnanjala created the topic: String manipulation exercise Hi Guys, Say there is a text file inject.dat, it has 5 entries […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.scmgalaxy.com\/tutorials\/string-manipulation-exercise\/\" \/>\n<meta property=\"og:site_name\" content=\"scmGalaxy\" \/>\n<meta property=\"article:published_time\" content=\"2017-12-08T05:06:58+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-02-27T09:29:14+00:00\" \/>\n<meta name=\"author\" content=\"scmgalaxy K\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"scmgalaxy K\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.scmgalaxy.com\\\/tutorials\\\/string-manipulation-exercise\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.scmgalaxy.com\\\/tutorials\\\/string-manipulation-exercise\\\/\"},\"author\":{\"name\":\"scmgalaxy K\",\"@id\":\"https:\\\/\\\/www.scmgalaxy.com\\\/tutorials\\\/#\\\/schema\\\/person\\\/fc12ad190f540e79460243c81148d102\"},\"headline\":\"String manipulation exercise\",\"datePublished\":\"2017-12-08T05:06:58+00:00\",\"dateModified\":\"2021-02-27T09:29:14+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.scmgalaxy.com\\\/tutorials\\\/string-manipulation-exercise\\\/\"},\"wordCount\":150,\"commentCount\":0,\"keywords\":[\"String\"],\"articleSection\":[\"Shell Script\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.scmgalaxy.com\\\/tutorials\\\/string-manipulation-exercise\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.scmgalaxy.com\\\/tutorials\\\/string-manipulation-exercise\\\/\",\"url\":\"https:\\\/\\\/www.scmgalaxy.com\\\/tutorials\\\/string-manipulation-exercise\\\/\",\"name\":\"String manipulation exercise - 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