awk replace
$ awk 'BEGINFS=OFS=";"} gsub(/-./, ",", $2)} 1' ip.txt 2018.01.02;1,5;comment 1 2018.01.04;2,75;comment 2 2018.01.07;5,25;comment 4 2018.01.09;1,25 ... , ,In AWK function sub replaces one/first instance. If you replace sub with gsub should replace all instances. Hence this should work ok: sig=2.6 awk -v sig="$sig" ... ,2016年9月2日 — awk 'sub(/are hello/,"are are")sub(/you hello/,"you you")}1' file /foo/bar/how /SOME_TEXT_HERE/hello /foo/bar/are are/SOME_OTHER_TEXT ... ,2011年1月7日 — Depending on the version of AWK you have, it may or may not have in-place editing, hence the usual practice is save and replace new text. ,2020年5月8日 — The first task in our list is a substitute, which we write as sub; Sub directs awk to find all occurrences of OLD_TERM and replace them with ... ,2017年10月14日 — awk solution: $ cat tst.awk BEGINFS=OFS=";"} NR>1 && sub(/m/,"x",$3)print $3, $4}. This will work on your real 250.000 lines file: $ awk -f ... ,Yep, you could do it with awk itself using awk's inbuilt sub or gsub function. $ awk '/server/sub(/.*/,"XX",$NF)}1' file /root/logs/*_log dbset quotatab rsyslog.conf ... ,If regexp does not match target , gensub() 's return value is the original unchanged value of target . gsub( regexp , replacement [ , target ] ). Search ... ,2013年1月21日 — Use gsub which does global substitution: echo This++++this+++is+not++done | awk 'gsub(/-++/," ");}1'. sub function replaces only 1st match, ...
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 awk replace 相關參考資料
Awk - replace one character only in a certain column - Unix ...
$ awk 'BEGINFS=OFS=";"} gsub(/-./, ",", $2)} 1' ip.txt 2018.01.02;1,5;comment 1 2018.01.04;2,75;comment 2 2018.01.07;5,25;comment 4 2018.01.09;1,25 ... https://unix.stackexchange.com Awk Find And Replace Fields Values - nixCraft
https://www.cyberciti.biz awk replace all occurrences of a string globally - Stack Overflow
In AWK function sub replaces one/first instance. If you replace sub with gsub should replace all instances. Hence this should work ok: sig=2.6 awk -v sig="$sig" ... https://stackoverflow.com Awk replace string in line - Stack Overflow
2016年9月2日 — awk 'sub(/are hello/,"are are")sub(/you hello/,"you you")}1' file /foo/bar/how /SOME_TEXT_HERE/hello /foo/bar/are are/SOME_OTHER_TEXT ... https://stackoverflow.com Find and replace text within a file using commands - Ask Ubuntu
2011年1月7日 — Depending on the version of AWK you have, it may or may not have in-place editing, hence the usual practice is save and replace new text. https://askubuntu.com How to Find and Replace Text in a File - Baeldung on Linux
2020年5月8日 — The first task in our list is a substitute, which we write as sub; Sub directs awk to find all occurrences of OLD_TERM and replace them with ... https://www.baeldung.com How to replace character in certain column with awk - Stack ...
2017年10月14日 — awk solution: $ cat tst.awk BEGINFS=OFS=";"} NR>1 && sub(/m/,"x",$3)print $3, $4}. This will work on your real 250.000 lines file: $ awk -f ... https://stackoverflow.com How to replace the value in awk - Stack Overflow
Yep, you could do it with awk itself using awk's inbuilt sub or gsub function. $ awk '/server/sub(/.*/,"XX",$NF)}1' file /root/logs/*_log dbset quotatab rsyslog.conf ... https://stackoverflow.com String Functions (The GNU Awk User's Guide) - GNU.org
If regexp does not match target , gensub() 's return value is the original unchanged value of target . gsub( regexp , replacement [ , target ] ). Search ... https://www.gnu.org Substitute a regex pattern using awk - Stack Overflow
2013年1月21日 — Use gsub which does global substitution: echo This++++this+++is+not++done | awk 'gsub(/-++/," ");}1'. sub function replaces only 1st match, ... https://stackoverflow.com |