{"id":11554,"date":"2024-04-03T20:23:19","date_gmt":"2024-04-03T18:23:19","guid":{"rendered":"https:\/\/monodes.com\/predaelli\/?p=11554"},"modified":"2024-04-03T20:23:24","modified_gmt":"2024-04-03T18:23:24","slug":"how-to-replace-string-in-bash-5-methods-linuxsimply","status":"publish","type":"post","link":"https:\/\/monodes.com\/predaelli\/2024\/04\/03\/how-to-replace-string-in-bash-5-methods-linuxsimply\/","title":{"rendered":"How to Replace String in Bash? [5 Methods] – LinuxSimply"},"content":{"rendered":"\n
\n

In bash scripting, the replacement of string is important because it allows you to modify a variable and the text of a file. It also helps in file and text processing and to validate user input.<\/p>\n\n\n\n

To replace a string in bash, check the following methods:<\/p>\n\n\n\n

    \n
  1. Using Parameter expansion: ${String\/pattern\/replacement}<\/code><\/li>\n\n\n\n
  2. Using the sed command: sed 's\/pattern\/replacement\/' filename<\/code><\/li>\n\n\n\n
  3. Using the awk command: "input_str" | awk 'pattern { action }'<\/code><\/li>\n\n\n\n
  4. Using the perl command: perl [options] -e 'action' filename<\/code><\/li>\n\n\n\n
  5. Using the tr command: tr 'old_chars' 'new_chars' < "input_file"<\/code><\/li>\n<\/ol>\n\n\n\n

    Dive into the article to learn these methods of how to replace a bash string in detail.<\/p>\nSource: How to Replace String in Bash? [5 Methods] – LinuxSimply<\/a><\/em><\/cite><\/blockquote>\n\n\n\n

    <\/p>\n","protected":false},"excerpt":{"rendered":"

    \n

    Read more →<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"quote","meta":{"inline_featured_image":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":4,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"federated","footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[278],"tags":[298],"class_list":["post-11554","post","type-post","status-publish","format-quote","hentry","category-tricks","tag-shell","post_format-post-format-quote"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p6daft-30m","jetpack-related-posts":[{"id":1895,"url":"https:\/\/monodes.com\/predaelli\/2016\/11\/15\/50-most-frequently-used-unix-linux-commands-with-examples\/","url_meta":{"origin":11554,"position":0},"title":"50 Most Frequently Used UNIX \/ Linux Commands (With Examples)","author":"Paolo Redaelli","date":"2016-11-15","format":false,"excerpt":"Several pearl in 50 Most Frequently Used UNIX \/ Linux Commands (With Examples) Add line number for all non-empty-lines in a file $ sed '\/.\/=' thegeekstuff.txt | sed 'N; 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The other proposed solutions may handle files with newline in their name, but currently I see such file names as nonsense find . -type d | while read file; do echo $file; done However, doesn't work if the file-name contains newlines. The above is\u2026","rel":"","context":"In "Documentations"","block_context":{"text":"Documentations","link":"https:\/\/monodes.com\/predaelli\/category\/documentations\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/monodes.com\/predaelli\/wp-json\/wp\/v2\/posts\/11554","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/monodes.com\/predaelli\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/monodes.com\/predaelli\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/monodes.com\/predaelli\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/monodes.com\/predaelli\/wp-json\/wp\/v2\/comments?post=11554"}],"version-history":[{"count":0,"href":"https:\/\/monodes.com\/predaelli\/wp-json\/wp\/v2\/posts\/11554\/revisions"}],"wp:attachment":[{"href":"https:\/\/monodes.com\/predaelli\/wp-json\/wp\/v2\/media?parent=11554"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/monodes.com\/predaelli\/wp-json\/wp\/v2\/categories?post=11554"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/monodes.com\/predaelli\/wp-json\/wp\/v2\/tags?post=11554"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}