{"id":129636,"date":"2020-12-09T17:00:56","date_gmt":"2020-12-09T14:00:56","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/how-to-rename-screenshots-in-linux-cloudsavvy-it\/"},"modified":"2020-12-09T17:00:56","modified_gmt":"2020-12-09T14:00:56","slug":"how-to-rename-screenshots-in-linux-cloudsavvy-it","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/how-to-rename-screenshots-in-linux-cloudsavvy-it\/","title":{"rendered":"#How to Rename Screenshots in Linux \u2013 CloudSavvy IT"},"content":{"rendered":"

“#How to Rename Screenshots in Linux \u2013 CloudSavvy IT”<\/strong><\/p>\n

\n\"Bash<\/p>\n

Many desktop Linux systems save screenshots with names like Screenshot from 2020-11-29 18-57-51.png<\/code>. Often, what you really needed was to rename the files to something more obvious like webinar1.png<\/code>, webinar2.png<\/code>, and so on. Fortunately, renaming a bunch of files is really easy to do on the Linux command line.<\/p>\n

The Bash shell is very versatile, and provides different ways to evaluate values and expand variables. One neat evaluation is arithmetic evaluation<\/em>. To perform this evaluation, wrap your arithmetic statement with $((<\/code> and ))<\/code>.<\/p>\n

The evaluation can also include variable expansion, like $sum<\/code> to resolve into a value. But for convenience, any Bash variables listed between $((<\/code> and ))<\/code> are expanded automatically. For example, to increment a variable count by 1, you could type:<\/p>\n

count=$(( count + 1 ))<\/pre>\n
This is the same as typing:<\/p>\n
count=$(( $count + 1 ))<\/pre>\n
Arithmetic expansion supports the same operators found in other programming languages, including +<\/code> and -<\/code> for addition and subtraction, *<\/code> and \/<\/code> for multiplication and division, and %<\/code> for remainder. You can also use ++<\/code> and --<\/code> to increment and decrement a value in a variable. Check the man page for Bash, and scroll down to ARITHMETIC EVALUATION, for the full list of supported operators and their precedence.<\/p>\n
To rename all my screenshots, I needed to write this one-line Bash command:<\/p>\n
n=1; for f in Screenshot*.png; do mv -v \"$f\" webinar$n.png; n=$(( n + 1 )); done<\/pre>\n
But what does this do?<\/p>\n
The first part of the command, n=1<\/code>, initializes the variable n<\/code> to 1.<\/p>\n
Then I use a for<\/code> loop to operate on all the files that start with Screenshot<\/code> and end with the .png<\/code> extension. These are usually all the screenshots I captured during my last webinar. If I needed to be more precise, I might include the date in that file specification, such as Screenshot from 2020-11-29*.png<\/code>. The backslashes are literal escapes to preserve the spaces in the file name.<\/p>\n
Each iteration of the for loop stores a file name in the f variable. So the mv<\/code> command mv -v \"$f\" webinar$n.png<\/code> renames each file to my preferred file names like webinar1.png<\/code> , webinar2.png<\/code> , and so on. I need quotes around the $f<\/code> variable expansion so the spaces in Screenshot from YYYY-MM-DD hh-mm-ss.png<\/code> don\u2019t cause problems in my mv<\/code> command. If you get an error like mv: target 'webinar1.png' is not a directory<\/code>, you probably didn\u2019t put quotes around the $f<\/code>.<\/p>\n
Finally, I increment the value in the n<\/code> variable so it\u2019s ready for the next iteration in the loop. The arithmetic expansion n=$(( n + 1 ))<\/code> increments the n<\/code> variable by 1.<\/p>\n
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“#How to Rename Screenshots in Linux \u2013 CloudSavvy IT” Many desktop Linux systems save screenshots with names like Screenshot from 2020-11-29 18-57-51.png. Often, what you really needed was to rename the files to something more obvious like webinar1.png, webinar2.png, and so on. Fortunately, renaming a bunch of files is really easy to do on the…<\/p>\n","protected":false},"author":1,"featured_media":129637,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/www.cloudsavvyit.com\/p\/uploads\/2017\/07\/add8ac45.png","fifu_image_alt":"","footnotes":""},"categories":[18],"tags":[],"class_list":["post-129636","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/129636","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=129636"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/129636\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/129637"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=129636"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=129636"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=129636"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}