/tags/sed/ Recent content in sed on Shylock Hg Hugo -- gohugo.io en-us Mon, 02 Apr 2018 00:00:00 +0000 /post/2018/04/02/usage-of-sed/ Mon, 02 Apr 2018 00:00:00 +0000 /post/2018/04/02/usage-of-sed/ Typical usage sed SCRIPT INPUTFILE... > OUTPUTFILE note:if INPUTFILE==OUTPUFILE must call sed with option -i. note:default INPUTFILE is stdin,default OUTPUTFILE is stdout. Characters substitution sed "3,5s/pattern/object/1" inputfile > outputfile:replace the first matched characters in 3-5th lines by pattern with object. sed "s/pattern/object/3g" inputfile > outputfile:replace the 3-infinite matched characters in each line by pattern with object.