Here are some of my Linux bash shell\u00a0findings, I hope it is good for everyone<\/p>\n
Find some text in current folder, sub-folders and files:-<\/strong><\/p>\n Getting current time from some time server:-<\/strong><\/p>\n Convert Unix Timestamp (aka Epoch):-<\/strong><\/p>\n Downloading a URL:-<\/strong><\/p>\n Sending Data over network:-<\/strong><\/p>\n TCP Port Checker:-<\/strong><\/p>\n And<\/strong><\/p>\n Smallest Port Scanner:-<\/strong><\/p>\n Making File Backup when working on it<\/strong><\/p>\n “!$” Reusing Last command arguments<\/strong><\/p>\n Taking Folder Backup with rsync (local)<\/strong><\/p>\n Deleting all files\/Folder except some (in this example data and config folder will not delete)<\/strong><\/p>\n Will add more tricks laters…..<\/p>\n","protected":false},"excerpt":{"rendered":" Here are some of my Linux bash shell\u00a0findings, I hope it is good for everyone Find some text in current folder, sub-folders and files:- find . | xargs grep ‘string_to_find’ Getting current time from some time server:- cat < \/dev\/tcp\/time.nist.gov\/13 Convert Unix Timestamp (aka Epoch):- date -d @1292946804 Tue Dec 21 20:53:24 2010 Downloading a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_s2mail":"yes","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,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[16,12],"tags":[61,57,19,59,58,60],"class_list":["post-136","post","type-post","status-publish","format-standard","hentry","category-networking","category-programming","tag-advance","tag-bash","tag-linux","tag-scripting","tag-shell","tag-tricks"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p12j6H-2c","_links":{"self":[{"href":"https:\/\/blogs.silicontechnix.com\/index.php?rest_route=\/wp\/v2\/posts\/136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.silicontechnix.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.silicontechnix.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.silicontechnix.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.silicontechnix.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=136"}],"version-history":[{"count":18,"href":"https:\/\/blogs.silicontechnix.com\/index.php?rest_route=\/wp\/v2\/posts\/136\/revisions"}],"predecessor-version":[{"id":933,"href":"https:\/\/blogs.silicontechnix.com\/index.php?rest_route=\/wp\/v2\/posts\/136\/revisions\/933"}],"wp:attachment":[{"href":"https:\/\/blogs.silicontechnix.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.silicontechnix.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.silicontechnix.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}find . | xargs grep 'string_to_find'<\/pre>\n
cat < \/dev\/tcp\/time.nist.gov\/13<\/pre>\n
date -d @1292946804\r\nTue Dec 21 20:53:24 2010<\/pre>\n
exec 5<>\/dev\/tcp\/www.net.cn\/80\r\necho -e \"GET \/ HTTP\/1.0\\n\" >&5\r\ncat <&5<\/pre>\n
cat \/etc\/passwd > \/dev\/tcp\/example.com\/10000<\/pre>\n
(echo >\/dev\/tcp\/127.0.0.1\/23) 2>\/dev\/null \\\r\n&& echo open || echo close<\/pre>\n
cat < \/dev\/tcp\/localhost\/25<\/pre>\n
#!\/bin\/sh\r\n# Usage:>$PortScanner.sh hostname_or_ip startport endport\r\nfor ((i=$2; $i <=$3; i++)); do\r\necho >\/dev\/tcp\/$1\/$i && echo $i\/tcp Port Open;\r\ndone 2>\/dev\/null<\/pre>\n
cp portscanner.sh{,.bak}<\/pre>\nmkdir \/path\/to\/exampledir\r\ncd !$<\/pre>\n
\r\nrsync -Aax myfolder\/ myfolder-dirbkp_`date +\u201d%Y%m%d\u201d`\/\r\n<\/pre>\n
\r\nls | grep -v \u2018(data)|(config)\u2019 | xargs rm -r\r\n<\/pre>\n