Vik*_*tor98whitespacesed 我有一个简单的shell脚本,可以从文件中删除尾随空格.有没有办法让这个脚本更紧凑(没有创建临时文件)? sed's/[ \t]*$//'$1>$1__.tmp cat$1__.tmp >$1rm$1__.tmp Run Code Online (Sandbox Code Playgroud)
sed whitespace 13个回答 210投票 对于Linux 和 Unix,您可以使用 -i 的就地选项 sed: sed -i 's/[ \t]*$//' "$1" 请注意,该表达式将删除 OSX 上尾随的 t(您可以使用 gsed 来避免此问题)。它也可能在 BSD 上删除它们。 如果您没有 gsed,这里是 OSX 上正确(但难以阅读)的 sed 语法:...
\s+\z：字符串（恰好是整个文件）末尾的一个或多个空格字符（包括换行符）。正则表达式使用这个修饰符...
Remove Trailing Whitespace: $ sed 's/[[:space:]]*$//' filename 17) Appending lines To add some content before every line with sed & regex, use $ sed -e 's/.*/testing sed &/' testfile.txt So now every line will have ‘testing sed’ before it. 18) Removing all commented lines...
Whitespaces shown by little dotsTabs indicated by little marks in colorHere is the command used in this example to replace 4 spaces with tabs:sed -e 's/ /\t/g' input.txt > output.txtGo to top37. Truncate all lines to first 80 charactersCreate a text file named input.txt that ...
Showing 14 changed files with 31 additions and 31 deletions. Whitespace Ignore whitespace Split Unified FPEngine.cc TargetGroup.cc idle_scan.cc main.cc nmap.cc nmap_amigaos.h nmap_ftp.cc nse_openssl.cc osscan2.cc output.cc scan_engine.cc service_scan.cc tcp...
delete leading whitespace (spaces, tabs) from front of each line aligns all text flush left sed 's/^[ \t]*//' # see note on '\t' at end of file delete trailing whitespace (spaces, tabs) from end of each line sed 's/[ \t]*$//' # see note on '\t' at end of file ...
Commandsa,c,i, due to their syntax, cannot be followed by semicolons working as command separators and thus should be terminated with newlines or be placed at the end of ascriptorscript-file. Commands can also be preceded with optional non-significant whitespace characters. SeeMultiple commands...
The following solution is for more complex examples of (d), such as: not all fields contain "double-quote" marks, or the presence of embedded "double-quote" marks within fields, or extraneous whitespace around field delimiters. (Thanks to Greg Ubben for this script!) ...
Remove all blank lines: scnzzh@zubt1:~/zzh$ sed '/^$/d' a.txt 1 2 3 4 5 Remove lines those only contain whitespaces: scnzzh@zubt1:~/zzh$ cat a.txt aaa bbb ccc scnzzh@zubt1:~/zzh$ sed -r '/^\s*$/d' a.txt aaa bbb ccc Replace multiple whitespace lines to one line: ...